C. Rear of unit
BNC 50 Ohm an ten na con nec ting
so ckets
25-pin D sub mi nia tu re, Equip ment con nec tor for con nec-
male ting the in stal la ti on wi ring
3. Ope ra ting in struc tions
A. Swit ching on the unit
CAU TI ON : Do not switch on the VHF trans cei ver when en gi nes are being
start ed or shut down.
(1) Switch on the VHF trans cei ver using the ON/OFF switch (ro ta te vo lu me
con trol clock wi se).
(2) The seg ments of the LC dis play will blink with the po wer supp ly vol ta ge
ha ving drop ped down to 9V d.c. Fol lo wing the blin king pe ri od the self-test
is con duc ted. With low supp ly vol ta ge this test pe ri od can last up to 20
se conds. If the test is po si ti ve, the trans cei ver au to ma ti cal ly swit ches to
the mode which was ac ti vat ed be fo re switch-off.
If the test re sult ne ga ti ve, the LCD will dis play the first fault re port for
ap pro xi ma te ly five se conds. If furt her faults were de tec ted du ring test,
the cor re spon ding fault re ports will be dis play ed ad di tio nal ly. Af ter is
play ing the last fault re port the equip ment will switch au to ma ti cal ly to the
ope ra ting mode which was ac ti vat ed be fo re switch-off.
(3) The fol lo wing fault sig nals are pos si ble :
E1 Pro ces sor de fec ti ve
E2 Syn the si zer fai led
E3 Fault in EE-PROM
E4 Con trol ler (PIC) au dio as sem bly de fec ti ve
(4) The va ri ous mo des are com pre hen si ve ly des cri bed, tog het her with the
set ting of the equip ment con fi gu ra ti on in the ser vi ce mode, in the An nex
to the Ge ne ral Ope ra ting In struc tions.
B. Trans mit/re cei ve mode
(1) Set the fre quen cy of the lo cal ground sta ti on in the pre set dis play and
press the ex chan ge key. Ro ta te the VOL con trol to the cen tre po si ti on.
NOTE : If the er ror mes sa ge E2 ap pe ars in the top line du ring ope-
ra ti on, the syn the si zer is not lat ching and furt her R/T
ope ra tions no lon ger pos si ble. The VHF trans cei ver must
be check in the next ser vi ce sta ti on
IN STAL LA TI ON AND OPE RA TI ON
AR 4201 - ( )
Page 3-3
23-10-01 De cem ber 15/98
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