Kenwood NX-800 Service Manual page 66

NX-800
■ 5 reference level adjustments frequency
Tuning point
Low
Low'
Center
High'
High
■ Adjustment item supplement
Adjustment Item
LCD contrast
Receive Assist
Transmit Assist
RTC
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/Narrow)
QT Deviation
DQT Deviation
LTR Deviation
DTMF Deviation
Single Tone Deviation
MSK Deviation
CWID Deviation
Sensitivity 1
Sensitivity 2
RSSI Reference
Open Squelch
66
ADJUSTMENT
RX (MHz) TX (MHz)
400.05000 400.10000
417.55000 417.60000
435.05000 435.10000
452.55000 452.60000
469.95000 469.90000
The contrast of LCD display can be changed.
The lock voltage of VCO (Receive) is adjusted.
This item must be adjusted before all adjustment items for receiver section are adjusted.
The lock voltage of VCO (Transmit) is adjusted.
This item must be adjusted before all adjustment items for transmitter section are adjusted.
Rea Time Clock (RTC) is adjusted.
This item uses the internal clock.
(Any measurement equipment is not required.)
Frequency stability is adjusted under receiving condition with SSG.
The SSG needs 0.001ppm 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.
The limit value of the High Transmit Power output is adjusted.
The limit value of the Low Transmit Power output 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/Narrow) is adjusted.
This item must be adjusted before all adjustment items for tone deviations are adjusted.
Note: "Maximum Deviation (Analog Narrow)" must be adjusted before "CWID 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" is adjusted.
MSK tone deviation is adjusted.
CWID tone deviation is adjusted.
CWID is used to inform the others who is transmitting on a 6.25-kHz spacing channel.
(In FCC rule, Analog mode or CWID is required for each channel-spacing.)
Sensitivity 1 allows a service engineer to improve the intermodulation rejection, receiver spurious response,
and receiver sensitivity characteristics by changing the voltage of Variable-Capacitor Tune in the receiver
front-end circuit of the primary band-pass fi lter to optimize the characteristics at fi ve frequency spots.
Sensitivity 2 allows a service engineer to improve the intermodulation rejection, receiver spurious response,
and receiver sensitivity characteristics by changing the voltage of Variable-Capacitor Tune in the receiver
front-end circuit of the secondary band-pass fi lter to optimize the characteristics at fi ve frequency spots.
The minimum RSSI level for scan stop is adjusted.
The squelch level at level "5" is adjusted.
Description