Vaisala RVP900, User Manual

Page: 361 / 484

5. Using the
U/u
and
D/d
commands, verify the limits of the AFC tuning and fill in the
following table:
AFC % Measured Frequency (MHz)
-100% ______
0% ______
+100% ______
The 0% AFC value should be within approximately ±0.2 MHz of the center IF frequency
(for example, 30 MHz).
The values at ±100% should correspond to approximately ± 7 MHz of the center IF
frequency, or at the maximum span that is supported by the STALO; whichever is less.
6. Toggle the MFC mode to AFC:
a. Type: =
b. Verify that the terminal indicator changes from Manual to AFC .
7. Exit the Ps menu.
Checklist
Table 104 MFC Setup Checklist
Task Checked OK/Not OK Remarks
Test procedure completed successfully.
Parameters are set.
See
6.6 Ps — Plot Burst Spectra and AFC (page 137) .
Test Passed
For Customer Date:
For Vaisala Date:
A.20 AFC Functional Test (Optional)
Test Goal
Verify that the AFC properly tracks the burst pulse frequency.
Test Equipment
KVM connected
Test Procedure
1. Enter the TTY setups through
dspx
.
2. Enter the Ps mode and observe the output on a display scope.
Appendix A – Installation and Test Procedures
359