5-10
GTX 327 MAINTENANCE MANUAL
Rev B
190-00187-05
Figure 5-2. Transmitter Shield Cover Alignment Cutouts
5.12.4
Reply Rate Limiting Test
1.
Set the PRF switches to 1200 Hz and verify that the percent reply is at or between 97 and 100%.
2.
Set the PRF switches to 1800 Hz and verify that the percent reply is not greater than 70%.
3.
Return PRF switches to 500 Hz.
5.12.5
Side Lobe Suppression
1.
Adjust the RF Level of the ATC-1400A until the percent reply indicates 90% (MTL).
2.
Adjust the RF level to MTL + 3 dB and verify that the unit is replying greater than 90%.
3.
Set the SLS/Echo switch to –9 dB and turn the associated toggle switch to ON. Verify that percent
reply is unchanged from above.
4.
Set the SLS/Echo switch to 0 dB and verify that percent reply is less than 2%.
5.
Adjust the RF level to MTL + 25 dB and verify that percent reply is less than 2%.
6.
Adjust the RF level to MTL + 50 dB and verify that percent reply is less than 2%.
7.
Return SLS switch to OFF position.
The document reference is online, please check the correspondence between the online documentation and the printed version.
