Alinco DJ-438, Руководство по обслуживанию, Страница: 31 / 41

The DJ-493/496 does not require a serviceperson to manipulate the compo­
nents on the printed-circuit board, except the trimmer when adjusting reference
frequency and deviation.Most of the adjustments for the transceiver are made by
using the keys on it while the unit is in the adjustment mode.Because the adjust­
ment mode temporarily uses the channels, frequency must be set on each chan­
nel before adjustments can be made.For instructions on how to program the
channels, see the “DJ-493/496 INSTRUCTION MANUAL” which came with the
product.In consideration of the radio environment, the frequency on each chan­
nel must be near the value (+/-1 MHz) listed in the table below.To enter the ad­
justment mode, set key lock and input 490217(DJ493: F key one time, VOL key
one time, SQL key two times, KL key one time, VM key two times.).Decimal point
at 100MHz and 10MHz appears in LCD. (To release the mode, same manner to
enter the adjustment mode.)
Channel frequencies used in the adjustment mode
Memory
Channel
Channel function
Frequency
C
i _
T
1
Reference frequency adjustm ent
435 MHz
445 MHz
2
High power adjustm ent 435 MHz
445 MHz
3 Low power adjustm ent
435 MHz
445 MHz
4 M inim um frequency sensitivity adjustm ent 430 MHz
430 MHz
5 M edium frequency sensitivity adjustm ent
435 MHz 445 MHz
6
M axim um frequency sensitivity adjustm ent 439.9875 MHz
449.995 MHz
7 S-m eter
(
1 ) adjustm ent
435 MHz 445 MHz
8
S-m eter ( FULL ) adjustm ent
435 MHz 445 MHz
9 Deviation 435 MHz
445 MHz
10
DTMF ( 1 ) test (DJ-496) 435 MHz
445 MHz
11
DTMF ( D ) test (DJ-496)
435 MHz
445 MHz
13
Tone 88.5 Hz test 435 MHz
c y u ^
IV l 1 1
15 DCS code 255 test 435 MHz
445 MHz
16 Tone burst test
435 MHz
445 MHz
17 Aging ( Not required to use )
435 MHz
A A C * 4 U 7
H H J IV l 1 1 L.