Adjustment - Kenwood NX-720 Service Manual
Vhf digital transceiver
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Also See for NX-720:
- Service manual (90 pages) ,
- Instruction manual (24 pages) ,
- Technical details (2 pages)
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NX-720
Controls
Power
Volume
switch
Up/Down key
Modular
Programmable
MIC jack
function keys
KMC-36 (OPTION)
[PTT]
■
Preparations for checking/tuning the transceiver
Before attempting to check/tune the transceiver, connect
the unit to a suitable power supply.
Whenever the transmitter is turned on, the unit must be
connected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
4Ω dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during checking/tuning.
Panel Test Mode
■ Test mode operation features
This transceiver has a test mode. To enter test mode,
press and hold the [ ] key while turning the transceiver
power ON. Before the transceiver enters test mode, the
frequency version information appears on the LCD momen-
tarily. Test mode can be inhibited by programming. To exit
test mode, turn the transceiver power OFF. The following
functions are available in test mode.
50
ADJUSTMENT
Channel
LCD
Up/Down key
Keypad
■ Key operation
" " not appears on the LCD display
Key
Function
[ ]/[ ]
Test channel up/down
Push: Squelch level up
[ ]
Hold: Squelch off
[ ]
Wide/Narrow/Very narrow
[ ]
Shift to panel tuning mode
[ ]
Function on
[
]
MSK 1200bps and 2400bps 2400bps:
Push: Test signaling up
[
]
Hold: Test signaling up
continuously
[ ]/[ ]
Volume level up/down
[PTT]
Transmit
(MIC)
Use as the DTMF keypad.
[0] to [9]
If a key is pressed during
and
transmission, the DTMF
[#], [ ]
corresponding to the key
(MIC)
that was presses is sent.
" " appears on the LCD display
Key
Function
[ ]
Function off
[ ]
Analog /NXDN
[ ]
Function off
[ ]
LCD all lights
[ ]
High/Low power
[ ]
Function off
[
]
Compander on/off
[
]
Beat shift on/off
[ ]/[ ]
Volume level up/down
[PTT]
Transmit
(MIC)
[0] to [9]
and
Function off
[#], [ ]
(MIC)
Display
Channel No.
Squelch level
Squelch off:
icon appears
Wide: "W"
Narrow: "N"
Very narrow: "V"
-
" " appears on the LCD
display
icon appears
Signaling No.
-
-
Display
-
Analog: "A", NXDN: "N"
-
LCD all point appears
High: icon not appears
Low : "
" icon appears
-
On:
icon appears
On:
icon appears
-
-
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