Retevis H-777, Руководство пользователя, Страница: 9 / 12

Retevis
ADDITIONAL FUNCTIONS
SQUELCH LEVEL
The purpose of Squelch is to mute the speaker when no signals
are present (Squelch OFF). With the squelch level correctly set,
you will hear sound only while actually receiving signals (Squelch
ON). The squelch level can be adjusted via program software.
TIME-OUT TIMER (TOT)
The purpose of the Time-out Timer is to prevent any caller from
using a channel for an extended period of time which will cause
thermal damage. The built-in Time-out Timer limits each
transmission time to a certain time. The transmission time extends
the certain time you set, an alert tone will sound.
SCAN
Scan is a useful function for hands-off monitoring of your favorite
frequencies. When transceiver is set as SCAN via software, turn
the channel selector to channel 16, the transceiver will automatically
detect the activities of scanning channel from 1 to 15 (Different
channel can be set) .
1. The transceiver stops scanning at the frequency (or memory
channel} where a signal is detected. It then continues or stops
scanning.
2. If there are less than 2 channels, it can not scan.
3. On channel 16, press PTT and MONI key, it will turn on the
SCAN, or turn off the SCAN.
4. If the FM radio function is activated, it can not scan.
VOICE PROMPT
1. Voice Prompt ON/OFF can be set via software.
2. On channel 10, press PTT and MONI key, then switch on the
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Retevis
transceiver to choose different voice prompt languages.
VOX(Voice Operated Transmission)
VOX eliminates the necessity of manually switching to the
transmission Mode each time you want to transmit. The transceiver
automatically switches to Transmission Mode when the VOX
circuitry senses that you have begun speaking into the microphone.
When you operate the VOX function, you must use an optional
headset with microphone.
1. When operating the VOX function, be sure to set the VOX
Gain level which allows the transceiver to recognize the sound
levels.
2. If the microphone is too sensitive, the transceiver will begin
transmitting when there is noise in the background.
3. If it is not sensitive enough, it will not pick up your voice when
youbegin speaking. Be sure to adjust the VOX Gain level to
an appropriatesensitivity to allow smooth transmission. On
channel 1-5, press and hold the MONI and PTT, then switchon
the transceiver, thus to activate the VOX functions ON/OFF.
EMERGENCY ALARM
On channel 11, press and hold the PTT and MONI, then switch the
transceiver on, thus to activate the emergency alarm function ON/OFF.
Also it can be set with program software. If the function is OFF, the
other transceiver receives the signal, it is not able to alarm.
Battery Saver
The battery saver function will decrease the amount of power used
when a signal is not being received and no operations are being
performed(no keys are being pressed, and no switches are being
turned).
While the channel is not busy and no operation is performed for
more than 10 seconds, Battery Saver turns ON.
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