35

TK-480/481

■Tuning mode

ADJUSTMENT
FREQ 1Adjustment (1~256)Adjustment item
Panel test mode
System/Group No.
FREQ : Frequency adj.
HPOW : High power
THPW : High power (T/A)
LPW : Low power
TLPW : Low power (T/A)
BAL : DQT balance
MAX : Max deviation L MAX
TMAX : Max deviation (T/A)
FQT : Fine QT
FDQT : Fine DQT
FLTR : LTR
DTMF : DTMF deviation
FMSK : MSK deviation
TONE : Tone deviation
BATT : Battery
SQL : Squelch
[S]
[C]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[S]
[C]
[C]
[C]
[C]
[C]
[C]
[C]
[C]
[C]
[C]
[C]
[C]
[C]
C MAX H MAX
[C]
[C] [C]
[C]
[A]
[A]
[C]
[C]
NMAX : Max deviation (NPSPAC)
(TK-480)
L TMAX C TMAX H TMAX
[C] [C]
[C]
[A]
[A]
L NMAX C NMAX H NMAX
[C] [C]
[C]
[A]
[A]
IC30
IC14
VC
1–1Group No.System No.

•Transceiver tuning

(To place transceiver in tuning mode)

System appears on LCD. Set system according to tuning
requirements.
LCD display (Test mode)
Press [S], now in tuning mode. Use [ B] button to write
tuning data through tuning modes, and channel selector
knob to adjust tuning requirements (1 to 256 appears on
LCD).
Use [C ] button to select the adjustment item through
tuning modes. Use [A] button to adjust 3 point tuning.
LCD display (Tuning mode)

3-point tuning frequency (MHz)

Test CH TK-480 TK-481
RX TX RX TX
Low 851.05000 806.05000 935.02500 896.02500
Center 860.50000 815.50000 938.02500 899.02500
High 869.90000 824.90000 940.90000 901.90000

Adjustment Points

TX-RX unit (X57-5630-XX) Component side view