Instructions for using gir 2. Purpose and principles of the weight of the gir. Cardicate frequency control

Complete review of the Samsung Gear Fit Fit 2 Fitness Bracelet and the instruction in Russian will help you explore and set up these sports hours in the right way.

Fit 2 has a beautiful display, a decent design, cardiac rhythm monitor, as well as a built-in GPS. In addition, it is possible to store music and reproduce it directly from the device. With so much functions, this fitness bracelet is more like a SmartWatch.

The package includes a FIT 2 device, a charging stand for a USB plug and user manual.

Design and Comfort

The bracelet has an attractive and trendy design by offering a curved responsive display with a oleophobic coating and a rubber strap in a sporty style. The size of the super amoled screen is 1.5 inches with a resolution of 432 × 216 pixels.

Nevertheless, reviews about such form factor are different. On the one hand, it may make it difficult to master the information, especially when the large text is displayed, such as in messages notice. Sports hours or fitness trackers, having a large square screen, have an explicit advantage in their ability to display information since reading content from a wider display more comfortable. But on the other hand, his curved facilitates work with a gadget when you have to scroll through the content with your finger.

At the same time, the bright colors of the super amoled screen are so intrusive that they even interfere with falling asleep, outdoors under the right rays of the sun, the display looks not so expressive as I would like. Of course, monochrome or reflective displays are better suitable for sports bracelets, but in this way the user loses the functionality of the fitness tracker.

As for the strap, it is very flexible, made of soft comfortable elastomeric material and is attached to the housing using the corporate connector. This means that it can be changed by a bracelet of another color or size, but only designed specifically for Fit 2.

Samsung supplies Gear Fit second generation in two sizes:

1. little S - For wrists 125-170 mm
2. big L - for wrists around 155-210 mm

At the "back" of the tracker there is an optical monitor cardiac rhythm. Near the sensor there are two point contacts for a wireless charging stand that horizontally holds Fit2 when charging. There are no ports for wired connections at the tracker.

Two physical buttons on the side of the device are used to return "home" and moving back to the previous screen. Each other function of the buttons depends on the active screen.

Interface

The Fit 2 bracelet has a set of horizontally scrolling screens, each of which corresponds to a specific function. Screens screens with finger, and an additional way to interact with the bracelet serve the "Back" and "home" buttons located on the side of the device.

You can also close the palm screen to turn it off.

Informs about the time, and also provides data on the number of steps passed, steps and calories spent.

Scroll with your finger to the left opens the screen with notifications, and if you spend your finger to the right, you can overclock the widgets, which will be discussed below.

• 24-hour magazine. Shows the linear course of your activity in the past days: periods when you were inactive, active, slept or did not use a fitness bracelet on the wrist.
• The exercise. Allows you to start sports or training, setting the type of activity, temporary goal and other parameters. You can also view the magazine of the previous active activity.
• Steps. Counter steps and indicators how close you are close to your daily goal.
• Stages. It shows the number of overcoming stages, for which you rose / sank for today, with the ability to view the data history for the week.
• Heart rate. The latest indicators of the heart rate are displayed and when they were fixed, as well as the highest and low heart rhythm during the day. Here you can view the data per week.
• Water. Record the number of cups of water drunk per day.
• Caffeine. Mark how many cups of coffee you used today.
• Together. Configure the tasks of counting their points with their number from friends and track your achievements compared to them.

In addition to these screens by clicking on the side lower button "Home", you can call the "Music Player", "Find My Phone", "Timer" and "Stopwatch". It also has the opportunity to fix how many water circles or coffee you drank, run the timer or use the "Find Phone" function.

Here you can see network indicators icons, battery charge, screen brightness level and much more, srolling the main screen down.

Applications

You can use the entire feature of the tracker if you download the mobile application to the phone. In a pair with a sports clock, it will help keep records of all your workouts and will form graphs and display the statistics of daily physical activity and other activities.

SAMSUNG S HEALTH app

S Health displays everything that Fit 2 collects, and also opens up even more options for entering data through the phone: for example, your weight or food intake. This is quite convenient software, well-displayed information, but keep in mind that if you previously used a fitness tracker and already have many data stored in other places, imports in S Health is impossible. The program is available in free access.

Configure the user can split functions between S Health and another application called Gear. In this case, you can use the GEAR to control the FIT 2 connection to the smartphone without resorting to S Health.

On the other hand, Fit 2 is able to work autonomously, without a connected phone, but it is unlikely that someone will become a fitness bracelet without the ability to view statistics in a mobile application.

The Gear's mobile application is a channel for connecting the smart bracelet to the phone and it is available for almost any smartphone running Android 4.4 Kitkat and above. You can download.

Here you can manage what applications can send notifications to Fit 2, change quick responses to messages, switch and configure dials, change application layout and set more applications when they become available.

With GEAR, you can use music files from your phone to play them on the device without the use of a smartphone.

If your fit 2 is lost, the "Find My Gear" function in this software will lead the tracker for its best search. In addition, before discovering the smart bracelet, you can remotely block it from re-connecting from another device.

Functions

Fit2 is not just a gadget, counting steps and distance, showing time and pulse, but also a multifunctional means of health control and communication with other users of the same device.

Notifications

Fitness-clock Samsung Gear Fit 2 (Gir Fit 2) provides an opportunity to receive notifications coming on a smartphone. However, the answers will be limited due to a small size of the device screen. Through the program on the phone, the user is given the opportunity to choose which software can send alerts on the smart bracelet. You can only answer by quick messages that are also configured in a mobile application.

Alarm clock

Despite the fact that the device determines the phases of sleep, there is no smart alarm clock in the bracelet. And in order to use the usual alarm clock in the clock, it must be installed, after downloading from Gear Market.

According to user reviews, the tracker makes pretty weak vibration signals to wake up the owner. Therefore, if you sleep hard, you can not feel easy vibration on the wrist.

Cardicate frequency control

The cardiac rhythm monitor requires a few seconds of a fixed state to measure the heart rate. Fit2 automatically records and tracks cardiac rhythm when you are alone, but when you are active, you need to stop for a moment to check the pulse.

The optical monitor also performs automatic tracking, focusing at the heart rate frequency through measurements every 10 minutes.

When the control of "Auto HR" is enabled, Fit 2 will track heartbeat every time he discovers rest periods. The results are displayed in the CSS widges on the tracker itself, as well as you can view them in the app S Health.

To make the tracker to keep track of sleep, you must make sure that in the S Health application is all set correctly. If you are the owner of the iPhone, it can cause difficulties because the device is designed to work with the Android application.

Run the program and go to the "Options" section, select "Manage Elements", activate the Sleep item.

You also need to register your device to create a connection between the phone and Gear Fit2. In a mobile application, the device breaks the quality of sleep into three categories - restless, light and fixed, and displays them on the graph with the corresponding timeline.

Tracking active activity

Samsung placed various sensors in Fit2, including pedometer, GPS and cardiac rhythm monitor. Most of these sensors operate automatically depending on the selected function or the fitness panel. They also automatically detect when you train and what exactly you are doing. Fit2 clearly tracks walking, running and running in a circle. In addition, it recognizes when the user is in a fixed state for too long, and gives the advice to move a little (these notifications, as well as the detection of exercises, if desired, can be disabled).

There are various activities that you can choose and they include:

• walking
• hike
• bike Lane
• orbitrek
• exercise bike
• elliptical simulator
• treadmill
• fallen
• twist
• squats
• pilates
• rowing
• other training

You can set targets based on tempo, duration, distance, calorie or basic workout. Whatever aspect you choose as your goal, a fitness bracelet Samsung Gear Fit 2 will show you your best result. After you start an exercise, you will receive updated information with important indicators, such as the pace, the number of calories burned, past time and much more. He also notifies you when you reach half the goal and when you perform a specified goal. If you are stationary more than an hour, the tracker pushes you to a walk.

During and after a session of the tracked workout, the user can access such information as:

• duration of training
• distance
• calories
• speed
• maximum heart rate
• % of the time in the active intensity zone

Training with GPS.

Thanks to the built-in GPS, Fit2 can track your walks and runs and record the traveled route. However, it will not track location with automatic physical exercise detection. You need to manually configure your execution through the "Exercise" panel. After entering the type of activity and the desired time, Fit2 will track your movements, as soon as you click "Start".

The tracker will record the location and display the shape of the route you choose yourself (check it in the clock exercise log). But it will not display the map to provide details and environment of your path while you do not synchronize it with a smartphone so that he can download the information about the map. As soon as it is done, the results will be detailed and accurate.

Heart rate and speed chart along with the card of your tracked GPS session are displayed on the display of FIT 2 itself, provided if the location detection is enabled.

During the workout with the support of GPS, scrolling the screens to the right or left, you can view duration, distance, heart rate, tempo, speed and spent calories.

Static exercises

In total, there are three types of exercises that can be performed under the attentive observation of the tracker: attacks, twisting and squats. Following the recommended method of their execution, you can be sure that the device will definitely calculate the number of repetitions and write them directly to the tracker.

The perfect implementation method is displayed immediately before the start of classes on the bracelet display.

However, it is not entirely convenient to start every time and click on the button by pressing this or that exercise and move to another. It would be much more practical if the user had given the opportunity to create their own training complexes from these three proposed species.

In addition, training is mainly focused on the legs and the press, neglecting the muscles of the hands. Although you can download third-party software in the Samsung application store.

Features

The fitness bracelet has some features that allow the user to use it with comfort: they include battery life, moisture protection, the ability to play music without pairing with a smartphone and others that we will analyze in detail below.

Hardware

Samsung Gear Fit 2 comes with a set of additional elements necessary for the proper fitness device, including GPS, Bluetooth, cardiac rhythm monitor and 4 GB of integrated memory.

While Gear Fit2 is connected to your Bluetooth smartphone, it also has a Wi-Fi connection, which allows your network data to automatically transmit from your phone.

Compatibility

Fit 2 has one drawback: it works only with Android smartphones (4.4 or higher).

Samsung notes that it can be used regardless of a mobile phone, so if you have an iOS device and you really would like to wear this particular fitness tracker, it will be possible to do. But in this case, you will not get smart notifications from your phone, and the training data will have to be viewed directly on the bracelet display.

To enjoy the benefits of Fit 2, it is not necessary to use smartphones from Samsung, since the device can be associated with other phones on which Gear Manager and S Health are installed. From other devices you can also view information transferred to them through the Health program installed with the Play Store.

The sports bracelet is certified and has protection from Water IP68, which means that you can immerse it to a depth of 1.5 meters for 30 minutes, without worrying about damage to water. However, this does not mean that it is suitable for swimming. It is also not recommended to wear a tracker during the reception of the soul: the water pressure varies depending on the type of shower head, and the device may not cope with high pressure.

Waterproofing is designed for intensive sports at high sweating and random splashes when washing hands and rain.

Fit 2 without a phone

You can use Fit 2 without a mobile device. However, some functions will not be available without connecting to a smartphone.

Obviously, notifications, downloading music and synchronization of fitness information will not be able to run when the tracker works in no phone mode, but it still can do a lot. Fitness elements will be available, including cardiac rhythm monitoring, as well as many parameters and user settings, such as various dials and change the procedure for using applications in the Fit2 menu. The fitness bracelet also functions perfectly, allowing you to adjust the display to the "Always On" option and manually set the time through the touch screen.

Battery life

According to the company, the tracker is able to keep the sufficient charge of his 200 mah battery within 3-4 days of use. Standby time - 5 days. Samsung estimates that GPS operating during training seats the battery for 9 hours. But even the GPS disconnected when tracking your exercises will reduce the expected battery life expectancy for about 2 days.

Keep in mind that the brighter the display is the faster the battery is discharged. The display is not always enabled, you can choose the waiting time of 15 seconds, 30 seconds or 1 minute.

Fortunately, the manufacturer has included a special feature of the gadget energy saving, which is very similar to the Ultra Power Saving mode for smartphones. When the power is insufficient, you will be prompted to turn it on, effectively disabling the majority of functions (except exercise and time) and turning the interface to one workplace completely in shades of gray.

The branded charger includes a magnetic stand in its design. It has a magnetic retainer, which should well hold the tracker in a vertical position. Charging cable connects to the USB port standard.

The time of complete charge is about 40 minutes.

How to extend the life of the battery

Your device provides various options that will help you save the battery charge.

• If you do not use the device, switch to standby mode by closing the palm screen.
• Turn on the power saving mode.
• Disconnect Bluetooth
• Deactivate the Wi-Fi function when it is not used.
• Reduce the screen brightness.
• Deactivate the "always incl" function.
• Configure notifications in the Samsung Gear application on the smartphone connected.

In addition to GPS, one of the best features of Fit 2 is 4 GB of integrated memory, which you can use to download music into a group. Those who listens to music during training can use the Spotify application on Fit 2, but this requires that the phone is in the action zone. On the other hand, users can transmit local music files to the device via Gear Manager and thus listen to music - just connect the Bluetooth headset to the Gear, and it will play music from the built-in music player.

The player works well enough and provides a convenient way to transfer sound during sports without having to rely on the smartphone. Sound tips on how long or how far physical activity has been advanced, are also transmitted through headphones that the user is very convenient and useful.

Characteristics Gear Fit 2

• too big for small wrists
• screen form is not ideal for notifications
• little battery life
• display badly read in the sun
• no iOS smartphone support

Fitness bracelet Samsung Gear Fit2 SM-R360 comes in black (Dark Gray), blue (Blue) and dark pink (Pink) color and costs $ 179. For middle-class sports hours from a large brand, the price is quite acceptable, although, for example , Fitbit Alta as an alternative to Samsung Fit 2 more attracted by its price of $ 130.

Despite the fact that the tracker is equipped with features such as GPS and a musical player, and has a lower price than some competitors, the lack of support for the iPhone and a short time of autonomous work limit its attractiveness.

Assuming that Samsung can solve some issues, Gear Fit 2 can become one of the best fitness trackers, although it needs to be a big refinement.

The heterodyne resonance indicators (gir) are simple measuring instruments designed to detect and display the resonance in radio-electronic devices containing resonant chains. Typically, the gir is a small box, in which the XC-generator of sinusoidal oscillations and the meter of current consumed by the current or a simple indicator of the RF signal is mounted. The generator coil is replaceable and installed on the block, the capacitor of the variable container (air or saliva) has a scale, separated (for each replaceable coil) in frequency.

If you place the girome coil near the resonant circuit, then when the generator's frequency of the generator approaches the frequency of the generator to the circuit frequency. It is well noticeable even when the gir reel is removed from the contour to a distance of several centimeters. When suction, the generator consumed from the power source changes, which allows you to determine the moment of resonance.

Gear is a fairly comfortable device. Usually its use does not even require connecting to the test chain. When testing the radio, the frequencies of the input circuits, the intermediate frequency amplifier circuits and containers of the heteroodine can be estimated. Often the gir is used to determine the resonant frequency of the antennas, such as short-wave radio stations, as well as the resonant feeders frequencies and segments of coaxial cables.

The USSR produced gir-1 and gir-2 devices were produced. However, the gir does not apply to professional devices due to the low accuracy of measurements and strong influence on the test device. Nevertheless, the gir is widespread in amateur practice. Descriptions of these beneficial appliances can be found in amateur literature (for example, in the collections of the Radio magazine) and on the Internet.

Simple gir on one field transistor

In the Big Soviet Encyclopedia, a gir was described on a lamp triode. Nowadays, much more convenient to apply a field transistor. In fig. 1.59 shows the scheme of the simplest gir on the field of transistor, often found on the Internet. This is a typical circuit inductive three-point.

Fig. 1.59. Scheme of the simplest gir on the field transistor

Structurally, this gir is mounted in a small metal box. On the front panel, the indicator device and the capacitor of the variable container is installed, equipped with a configuration scale. On the side of the case, the connector is installed to which the inductor Xi is connected.

For overlapping a range of 25-40 MHz, the coil has the following parameters: the diameter of the frame 20 mm, the winding length is 30 mm, the winding consists of 9 turns of the wire PEV-2 with a diameter of 1.6 mm with a tap from the second turn (counting from the bottom according to the scheme). When using a set of replaceable coils, the device overlaps the frequency range from 3.0 to 150 MHz. The gir is used to determine the resonant frequencies of Lc contours, antennas and segments of the coaxial cable. As noted, the operation of the device is based on the absorption of high-frequency energy by the studied circuit or antenna at the time of the coincidence of their own resonant frequency and the frequency of the gir. At this point, the indicator instrument readings have a sharp failure. This failure is the greater, the stronger the connection between the gyr and the oscillatory contour and the higher the goodness of this circuit.

For accurate measurement of the resonance, it is necessary that the gir is inductively associated with the antenna at the point of the current beacon. As is known, the flow rate is located at a distance of 1/4 of the wavelength from the end of the vibrator. To this point and should be brought. By changing the frequency of the instrument setting, find the indicator of the indicator and read at this point the corresponding frequency from the scale. This frequency is the resonant antenna frequency. It must be remembered that the indication of the resonance occurs not only at the main frequency, but also on harmonics.

If the frequency of the antenna resonance is measured in close proximity to the Earth, it shifts towards lower frequencies. When the antenna is raised on the mast, the resonant frequency will shift up 0.2-0.4 MHz. Using the gir, you can select the length of the coaxial cable to work in the adjusted transmission line mode (the electrical length of such a line is equal to an integer number of half-breaves). To this end, one end of the cable is crushed, and a gir is brought to another and the resonance is determined near the frequency of 27 MHz. Gradually shortening the cable, seeks resonance on the average frequency of the range used.

Gir on a transistor analogue of a nonregatron

An interesting gir scheme is given in (Fig. 1.60). It uses a transistor analogue of a non-geatron with a-shaped flux based on two bipolar transistors T1 and T2. Due to this, the generator circuit does not require taps and individual positive feedback circuits. On the field transistor TK and the operating amplifier, a highly sensitive RF voltage detector with an arrow indicator was built.

Fig. 1.60. Gir on a transistor analogue of a nonregatron

This gir can serve as an indicator of external generators and a conventional indicator of resonance in passive resonance chains. Resistor-potentiometer P1, you can set the mode of lack of generation or its presence. In the absence of generation, the instrument reacts to the external RF radiation: if the adjustment frequency is close to the frequency of this radiation, the indicator readings increase. You can also specify the generation mode at which the indicator arrow deflects to a predetermined setting of the P2 potentiometer value. Then, if the generator frequency coincides with the frequency of the external resonance chain, the indicator readings decrease due to the energy suction from the outer chain generator.

In one can find the yield of the gir coils in the frequency range from 1.3 to 50 MHz. A variant of the scheme with amplitude modulation of the generator signal is also described. This will allow you to more accurately determine the resonance on the sound of phones.

All who dealt with the heterodyne indicator of resonance, know that work with him is quite painstaking, because During the measurement process, it is necessary to manipulate not only the frequency setting handle, but also the sensitivity regulator of the device, and in some designs - and the handle of the mode.

This is due to the fact that almost in all the frequency frequencies of the voltage voltage amplitude generators are also changing widely. In order not to skip the moment of resonance, the settings handle must be rotated as slowly and carefully monitor the readings of the direction indicator.

Working with a gyr is greatly simplified and accelerated if you add it to the device that locks the moment of resonance by any light indicator.

In fig. 1 shows a gir scheme with a LED indicator of the resonance. His work explains graphs. Fig. 2 and rice. 3. The higher the speed of rotation of the rotor of the setup condenser, the steeper the front of the changes to the voltage on the circuit (line A1 on the charts. 2 and Fig. 3).

The task is to fix a sharp decrease in the level of HF voltage. It solves the use of a differential amplifier, which, in general, responds not to the absolute value of the parameter, but to its change in any side.

A melting gir generator is assembled on the transistor VT1 according to the scheme described in. Differential amplifier is assembled on the transistors VT3, VT4, VT5. When restructuring on the range up to the reduction

capacities or, which is the same in the direction of increasing the voltage RF (shown by the arrow in Fig. 2 and Fig. 3) the straightened voltage of the negative polarity on the VT3 gate smoothly increases. On the drag of VT3 and the left cover of the C7 condenser, the voltage of positive polarity also increases smoothly. Transistors VT4 and VT5 are locked. At the time of the resonance, the voltage on the VT3 shutter changes dramatically towards the positive potential, there is a sharp drop in the pot potential of the VT3. Capacitor C7 "transmits" this potential difference to the VT4 database. As a result, the VT4 and VT5 open and the HL1 turn is clearly flashes. The duration of the flash depends on the time constant charge C7R7.

The DC amplifier is assembled on the VT2 transistor for the measuring device

Q - Whether in SL. units.
U - sealing voltage in SL. units.
a is an angle of rotation of the rotor of the condenser C, hail.
C - capacitance of the capacitor.
t is the rotation time of the condenser rotor, SL. elf
t.1 - moment of resonance.

Ra. The R5 resistor establishes the necessary sensitivity of the device. Using the R4VD4 chain, an additional positive offset on the source of VT2 is supplied. Resistor R3 The device arrow is installed in any location of the scale, on-and more convenient to observe the moment resonance.

Working with the device is very simple. The studied oscillatory circuit is associated with a gyra contour. The adjustment handle quickly translates the capacitor from the maximum capacity position to another extreme position. If there were no flashes of the LED, there is no resonance on this subband.

If an outbreak of the LED was observed, setting the setting knob to about the position at which there was a resonance, the R5 resistor set the maximum sensitivity of the measuring instrument, the R3 resistor set the arrow to the middle of the scale and, slowly rotating the guide knob, determine the moment of resonance in the traditional way. For a more accurate determination of the moment of resonance, the "stretching" trimming capacitor with air dielectric C5 with a capacity of 2 ... 15 PF, the knob of which is derived to the front gir panel. The resonance frequency value is read on the frequency meter scale.

Values \u200b\u200bL, C * are shown in the table. Radio motors can calculate the values \u200b\u200bof L, C * and winding data L based on the selected boundary frequencies of sub-bands, the available variable capacitor and frames for inductors. The method of calculating L, C * was repeatedly operated in the technical literature, for example.

When repetition, the gir in this scheme should need to consider that there may be a periodic disruption of oscillations (relaxation) due to the high quality of the circuit and large pos. You can get rid of it either by turning on the gap of the removal from the coil of the resistor for 47 - 200 ohms, or by making the removal not from the middle of the coil, and closer to the "earth" end. It should also be taken into account that the LED will flash whether the capacitor rotor is rapidly rotated in the direction of increasing the capacity, since At the same time, the voltage at the contour decreases.

Literature
1. Transistor gir // Radio. - 1971. - N 5. - p. 55.
2. Borisov V. Gear // Radio. - 1974. - N3. - p. 53.
3. Gavrikov B, Prahin P. Amplitude-stable heterodyne // Radio. - 1984. - N 2. - P. 22.
4. Biryukov S. to the calculation of the oscillatory circuits of generators // Radio. - 1992. - N11-s. 23.
5. Malinin P.M. Directory of the Radio-Design. - M.: Energy, 1978.