General - IFR FM/AM-1200A Operation Manual

4-5-1 GENERAL
The FM/AM-1200S/A contains a communications receiver capable of moni-
toring AM, FM, and SSB signals within a range of 250kHz to 999.9999
MHz. Signals may be monitored "off-the-air" using an external antenna
or by direct cable connection to the front panel T/R Connector (11).
Table 4-4 defines the signal parameters which can be monitored using the
receiver and associated monitoring functions.
SIGNAL CHARACTERISTIC($):
Demodulated*
AM, FM or SSB
MONITORING DEVICES
MODULATION Meter
(1)
CRT (31)
(Oscilloscope)
VFD (37)
Speaker
CONTROL SETTINGS:
Modulation METER
Control ( 4) to
desired "kHz/%X10"
MODULATION Select
Control ( 3) as
req'd.
VERTICAL Attenuator
Selector Control
(24) to desired
''kHz/%X10 position
Depress ''2nd FUNCT'
and "METER" Keys
(in that order).
Volume control
(40) as req'd.
RF and AUDIO Error*
FREQ ERROR Meter (36) FREQ ERROR Meter
Range Selector
Control (35) as
r
eq' d.
*
AUDIO Error*
(Lissajou Pattern)
VFD 137)
CRT (31)
Depress "2nd
FUNCT'' and ''METER''
Kevs (in that
order).
HORIZONTAL Selector
Control (26) to
tone, VERTICAL
Selector Control
( 24) to desired
kHz/%XlO.
When the received signal input level is below the FM/AM-1200S/A
squelch threshold, these monitoring functions will be disabled.
Table 4-4 Receiver Monitoring Capabilities
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