User's Manual Part 2

Operator Manual
2−134
3748DOC020102 Edition: 14.JAN.2005
2.5.5 Select PERFORMANCE MONITOR
The performance monitor PMU provides a transmitter power check and a receiver
sensitivity check. When targets are not available, the PMU can also be used for
manual tuning of the radar to ensure maximum radar performance at all times.
2.5.5.1 Performance monitor
Brief description
This is a passive performance monitor system.
This means:
The performance monitor is a device capable of signaling any degradation in the
performance of the radar in the display. In particular, indicates the efficiency of
the transmitter and the receiver.
Procedure: (see Figure: 2−77)
Step 1 Switch on the performance monitor by turning switch S1 on the external
performance monitor switch to ON.
Step 2 Select the 24 NM range.
Wait at least 30 minutes in order to allow the temperature of the
two systems to stabilize.
Step 3 Change the TUNE mode from Auto to Manual by selecting the upper
AUTO toggle field.
Slowly adjust (TUNE slider) the tuning command for Radar Up to the 4
markers produced by the performance monitor and visualized in the
NSC display (inability to synthesize the marker on the display unit may
be due to a degradation above 10 dB on the transmitter and receiver
or to a failure of the performance monitor).