User's Manual

Table Of Contents
RADARPILOT / CHARTRADAR
ED 3038 G 232 / 01 (2002-06)
Operating Instructions
21 Performance Monitor
b_r1_e72.fm / 21.06.02
132
The desired display produced by the Performance Monitor
Evaluation:
If the sector has a radius of about 16 NM, the transmitting performance is adequate.
The transmitting performance is permitted to drop by 6 dB relative to the nominal performance
and still be regarded as adequate. The sector then still has a radius of approximately 16 NM. If
the transmitting performance drops by more than 6 dB, the sector radius is reduced to 6 NM or
less.
The receiving sensitivity is adequate if the circle has a radius of at least 4 NM.
The receiving sensitivity is permitted to drop by 5 dB relative to the nominal sensitivity and still
be regarded as adequate. The radius of 4 NM corresponds to a reduction of 5 dB.
WARNING:
If these displays do not have the values mentioned, this means that the
performance quality of the radar system is no longer adequate for safe
radar operation. Request service!
Not only the magnetron that is being checked with this test but also the toothed belts of the
antenna gearing are expendable parts. Therefore, if the test shows that the magnetron has
reached the end of its useful life, the toothed belts also must be exchanged during the neces-
sary service work.
5. Switch off the Performance Monitor by clicking on the symbol .
6. Perform tuning as described in Section 4.
16 NM
4 - 6 NM
if the receiving sensitivity is adequate
if the transmitting performance is adequate
PM