Adjustment Item Supplement - Kenwood NX-720 Service Manual

■ Adjustment item supplement

Adjustment Item
Receive Assist
Transmit Assist
Frequency
High Transmit Power Limit
Low Transmit Power Limit
High Transmit Power
Low Transmit Power
Balance
Maximum Deviation
(NXDN Narrow/Very Narrow)
Maximum Deviation
(Analog Wide 5k/Wide 4k/Nar-
row)
QT Deviation
DQT Deviation
LTR Deviation
DTMF Deviation
Single Tone Deviation
MSK Deviation
CW ID Deviation
Sensitivity 1
Sensitivity 2
RSSI Reference
Open Squelch
Low RSSI
High RSSI
Tight Squelch
ADJUSTMENT
The lock voltage of VCO (Receive) is adjusted.
This item must be adjusted before all adjustment items for receiver section are adjusted.
This item can be adjusted only in PC Test Mode.
The lock voltage of VCO (Transmit) is adjusted.
This item must be adjusted before all adjustment items for transmitter section are adjusted.
This item can be adjusted only in PC Test Mode.
Frequency stability is adjusted under receiving condition with SSG.
The SSG needs 0.003ppm accuracy so please use a standard oscillator if necessary.
This item can be adjusted only in PC Test Mode so that the adjustment value is not changed easily.
High Transmit Power Limit is adjusted.
Low Transmit Power Limit is adjusted.
High Transmit Power is adjusted.
Low Transmit Power is adjusted.
The transmit audio frequency response is adjusted.
This item is adjusted so that the deviation of 2kHz becomes the same deviation of 20Hz.
This item must be adjusted before all adjustment items for deviations are adjusted.
Maximum Deviation of NXDN (Narrow/Very Narrow) is adjusted.
Maximum Deviation of Analog (Wide 5k/Wide 4k/Narrow) is adjusted.
This item must be adjusted before all adjustment items for tone deviations are adjusted.
Note: "Maximum Deviation (Analog Wide 5k/Wide 4k/Narrow)" must be adjusted before "CW ID Deviation
(NXDN Very
Narrow)" is adjusted.
QT tone deviation is adjusted.
DQT tone deviation is adjusted.
LTR tone deviation is adjusted.
DTMF tone deviation is adjusted.
The deviation of Single Tone used in "2-tone/5-tone" is adjusted.
MSK tone deviation is adjusted.
CW ID tone deviation is adjusted.
CW ID is used to inform the others who is transmitting on a 6.25 kHz spacing channel.
(In FCC rule, Analog mode or CW ID is required for each channel-spacing.)
Band-Pass Filter is adjusted.
The performance of Receive Sensitivity and unwanted signal rejection are improved.
This item can be adjusted only in PC Test Mode.
Band-Pass Filter is adjusted.
The performance of Receive Sensitivity and unwanted signal rejection are improved.
This item can be adjusted only in PC Test Mode.
The minimum RSSI level for scan stop is adjusted.
The squelch level at level "5" is adjusted.
RSSI display level " " is adjusted.
Both "Low RSSI" and "High RSSI" must be adjusted.
(The curve data of RSSI level is applied.)
The squelch level at level "9" is adjusted.
NX-720(G)/720
Description
37