PROFESSIONAL TWO-WAY RADIO
27
2 – Semi-low
29-20%
（
3.5V
）
1 – Low
19-0%
（
3.4-3.3V
）
Low Battery Alert
When the battery capacity is getting low and indicates a level of
“1”, the radio will alert you with a message “please charge the
battery” every 5 seconds unless the radio is recharged.
Note:
If the Voice Announcement function is disabled, the radio will sound
a double beep “di di” sound when going flat.
Call Ring
The side key can be set to transmit a loud 3 second call ring tone
to alert other radios.
SK1 is Factory programmed on Call Ring, Hold in to activate.
Emergency Alarm
Either side key can be programmed with a siren alert as an
emergency notification. When pressed, the siren will be sounded
on both the sending and receiving radios. The siren will stop once
the side key is pressed again, the sending radio is switched of or
the time-out timer limit is reached.
Announce Voice Channel
As the channels are changed, a voice announces the specific
channel. This is useful when using the radio at night. Either side
key can be programmed to activate / deactivate this function.
Factory programmed on English
PTT ID
Each radio can be allocated with a 15 digit ID consisting of digits
0-9 or A,B,C or D. The PTT ID recognition signal can be set per
channel or the side key can be programmed to activate /
deactivate it. The radio can be programmed to send the ID either
at the beginning and/or end of a transmission. The PTT ID or
automatic number identification (ANI) is used to connect with a
PROFESSIONAL TWO-WAY RADIO
28
repeater or telephone system, or for a control centre’s
communication management to identify this caller’s ID using
other radios equipped with a DTMF Decode function.
Begin of Tx:
The radio will send out the ID first before allowing
voice communication once the PTT key is pressed.
End of Tx:
The radio will send out the ID at the end of a
communication once the PTT key is released.
Both:
The radio will send out the ID first before and after the PTT
key is pressed.
Scramble
Scrambler can be set per channel or the side key can be
programmed to activate / deactivate it. Scrambling technology
use a coded algorithm to invert the audio signal and make it
unintelligible unless the other radio also has the same
descramble function. This function is used to achieve extra
privacy on the same channel.
Compander
A compander can be set per channel or the side key can be
programmed to activate / deactivate it. The compander will make
communication more clear by improving the ‘Signal to Noise
Ratio’ using compression and amplification technology and
decrease the noise when receiving a signal.
Summary of Contents for ZA-758
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