Alto MOD-800H, Руководство по обслуживанию

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has the output.(N ote: the C hannel of G roup 1~8 only scan 1~11; the
G roup 9~12 only scan 1~10).
12). LC D test:
a). G roup 1, C hannel 1, R F w ill display in LC D , AF w ill display in LC D ,
AN T.A w ill display 798,125M H Z, the battery status is full.
b): Press the M EN U key, it w ill appear G roup, C hannel, PL, U N N U , and SI
1. in return.
c): Press the M EN U key, after it displays G roup, press the up and dow n
should have corresponding variation, at last, press the M EN U key to
lock, and it w ill appear static condition.
d): W hen input the signal from AN T.A, the LC D w ill display AN T.A, input the
signal from AN T.B, the LC D display AN T.B.
e): D uring press the key, observe w hether the display of LC D is norm al or
abnorm al. The display screen w ill appear corresponding variations.
13). Turn on/dow n the unit for 3 tim es, the unit should w ithout the crashed
problem . The display screen w ill delay for 2-3 seconds then extinguish.
14). The current consum ption is less than 230m A.
15). SQ factory preset: set to 5.
M O D -800H
1. Test Instrum ents:
1). Signal generator: 8903B
2). O scilloscope: LS8106
3). M odulator: JM M -2200
4): Frequency recorder: EFC -3203A
5). D C pow er supply: 3303A.
6). M ulti-m eter
7). Frequency spectrum : E4403B
2. Instrum ents Setting:
1). Signal generator: 1kH z/65m V.
2). M odulator:
a). Tone setting:
H : Pass: 3K
L: Pass: 50K
R AN G E: 10
b). AF setting:
H : Pass: 25
L: Pass: 15K
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