37
ADJUSTMENT
Measurement
Test-
equipment
Unit Terminal
Adjustment
Unit Parts Method
Specifications/RemarksConditionItem
TK-480/481
9. DQT BAL 1) SYS – GRP : 4 – ✽
Power meter
Panel ANT Panel
Encoder
Make the demodu-
adjustment Select BAL ✽ ✽ ✽ Deviation knob lation waves into
in tuning mode. meter square waves.
Deviation meter filter setting
Oscilloscope
LPF : 3kHz
HPF : OFF AG
PTT : ON AF VTVM
10. MAX DEV 1) SYS – GRP : 4 – ✽
Universal
TK-480 : 3.8kHz ±50Hz
adjustment Select MAX ✽ ✽ ✽ TK-481 : 1.75kHz
in tuning mode. (According to the
AG : 1kHz/150mV larger +, –.)
Deviation meter filter setting
LPF : 15kHz
HPF : OFF
Adjustment item
L MAX ✽ ✽ ✽ →C MAX ✽ ✽ ✽
→H MAX ✽ ✽ ✽
PTT : ON
11. T/A MAX 1) SYS – GRP : 4 – ✽
DEV Select TMAX ✽ ✽ ✽
adjustment in tuning mode.
AG : 1kHz/150mV
Deviation meter filter setting
LPF : 15kHz
HPF : OFF
Adjustment item
L TMAX ✽ ✽ ✽ →C TMAX ✽ ✽ ✽
→H TMAX ✽ ✽ ✽
PTT : ON
12. NPSPAC 1) SYS – GRP : 10 – ✽ TK-480 : 2.9kHz ±50Hz
MAX DEV Select NMAX ✽ ✽ ✽ (According to the
adjustment in tuning mode. larger +, –.)
AG : 1kHz/150mV
Deviation meter filter setting
LPF : 15kHz
HPF : OFF
Adjustment item
L NMAX ✽ ✽ ✽ →C NMAX ✽ ✽ ✽
→H NMAX ✽ ✽ ✽
PTT : ON
13. MIC 1) SYS – GRP : 4 – 1 Check TK-480 : 2.2~3.6kHz
sensitivity AG : 1kHz/15mV (TK-480) TK-481 : 0.6~1.0kHz
check AG : 1kHz/8mV (TK-481)
Deviation meter filter setting
LPF : 15kHz
HPF : OFF
PTT : ON
14. T/A MIC 1) SYS – GRP : 4 – 1
sensitivity TA mode : ON
check (Press [A] key, then [C] key)
AG : 1kHz/15mV (TK-480)
AG : 1kHz/8mV (TK-481)
Deviation meter filter setting
LPF : 15kHz
HPF : OFF
PTT : ON
