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1-1
GENERAL
The CO M- 120C is a micr opr ocessor contr olled, digitally synthesized communication
ser vice monitor , which combines the oper ations of many differ ent test instr uments into a
single, compact unit. The CO M- 120C is capable of per for ming these functions:
R F G e n e r a t o r
F u l l D u p l e x O p e r a t i o n
A u d i o / D a t a / S i g n a l i n g
G e n e r a t o r s
D V M
D i st o r t i o n M e t e r
A u d i o F r e q u e n cy M e t e r
R F P o w e r M e t e r
R e ce i ve d L e ve l M e t e r
The CO M- 120C utilizes an alphanumer ic keypad, dedicated function keys, multitask
" Soft" Function Keys and a high r esolution, monochr ome flat panel display.
tests r emotely or manually.
stor age and r ecall. For instance, stor e and r ecall O scilloscope and Spectr um Analyzer
tr aces for signal compar ison.
The CO M- 120C per for ms a multitude of impor tant functions simultanelusly.
basic modes of oper ation ar e:
Duplex O per ation.
simplex mode, while testing other aspects of the Unit Under Test like Modulation Level,
Power , Sensitivity and Fr equency Er r or .
Additionally, the CO M- 120C pr ovides these independent test instr uments:
Micr opr ocessor contr olled memor y allows par ameter
RF G ener ate O per ation, RF Receive O per ation and
These modes allow gener ate and r eceive functions in duplex and
A u d i o / D a t a / S i g n a l i n g G e n e r a t o r s
O sci l l o sco p e
S p e ct r u m A n a l yze r
M e t e r s
R F R e c e i v e r
S p e c t r u m A n a l y z e r
O sci l l o sco p e
D e vi a t i o n M e t e r
S I N A D M e t e r
F r e q u e n cy E r r o r M e t e r
M o d u l a t i o n M e t e r
1-1
SECTION 1
INTRODUCTION
Per for m
The thr ee
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