Specifications

3-34 888-2857-001 5/9/13
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
Discipline
Reference
OCXO manual setting, from 1% to 100%, is obtained by entering as a number in the
range of 1 to 100.
This provides a control voltage for the 10 MHz OCXO reference oscillator when
Manual setting of the System Reference is selected. This voltage replaces the phase
detector output voltage which controls the 10 MHz OCXO reference oscillator when
any of the other Reference Source is selected. The OCXO frequency increases as the
control number is increased.
The relationship between the number entered and the 10 MHz frequency is as follows:
1% ~ 9.9999914 MHz. (This is the low end)
50% ~ 10.0000008 MHz. (This is the typical starting point.)
100% ~ 10.0000107 MHz. (This is the high end.)
RF Output If
Undisciplined
Yes / No.
If No is selected, the output will be muted if the 10 MHz OCXO reference oscillator
looses lock. This can occur when the External 10 MHz reference, External 1PPS
reference, or Internal GPS Reference choice is selected for the Reference source. It will
have no effect if the OCXO is operated in Manual. If Yes is selected, the system will
continue to produce RF power after reference loss unless another fault is present.
Softkeys
Setup Displays Setup screen.
Exciter Home Displays Exciter Home screen.
Table 3-16 Xmtr Home>Exciter Home>Setup>PFRU
Field Explanation