Operating instructions

LOCAL OPERATION
3-55
Systems
The [SYSTEM] mode key gives access to dedicated options for testing mobile communications
systems such as AMPS and TACS cellular mobile radio telephone systems and MPT 1327 mobile
radio trunking systems. Supplementary operating manuals are provided with Service Monitors
fitted with these options.
The same key also gives access to systems specifically designed to test Avionics navigation and
communication equipment. Appendix B, Avionics System, describes the use of this facility.
Spectrum analyzer
See Fig. 3-16, Spectrum analyzer test setup, and Fig. 3-17, Spectrum analyzer test setup using the
tracking generator.
OSCILLO-
SCOPE
LOG.
AMPLIFIER
SWEEP
GENERATOR
RF
DETECTOR
RECEIVER
CIRCUIT
LOCAL
OSCILLATOR
SERVICE
MONITOR
INPUT/
OUTPUT
SWITCHING
20dB
ATTEN.
ANTENNA
C3378
'N' TYPE
RF OUT
RF GENERATOR
UNDER TEST
Fig. 3-16 Spectrum analyzer test setup
OSCILLO-
SCOPE
LOG.
AMPLIFIER
SWEEP
GEN.
RF
DETECTOR
RECEIVER
CIRCUIT
INPUT/
OUTPUT
SWITCHING
20dB
ATTEN.
ANTENNA
C3379
'N' TYPE
BNC
RF OUT
RF OUTRF IN
FREQUENCY
SHIFTING UNIT
UNDER TEST
TRACKING
GEN.
OFFSET
CONTROL
LOCAL
OSCILLATOR
SERVICE
MONITOR
Fig. 3-17 Spectrum analyzer test setup using the tracking generator.