Specifications

5/9/13 888-2857-001 3-25
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
Bypass Pressing the Bypass soft key turns it orange. Selecting Bypass turns the
selected corrector OFF. Correction is not engaged.
Nonlinear: RF feedback sample is taken before the high power filter.
Success/Attempt x/x The digit to the right of the / indicates the number of times that corrector
attempted to make a correction.
The digit to the left of the / indicates the number of times the corrector
succeeded in making a correction. Just because the number of attempts does not
equal the number of success does not mean that RTAC is not functioning.
Adapt Pressing the Adapt soft key turns it green and turns the selected corrector on.
The correction algorithm will continuously calculate and update correction as
needed. When switching to this mode from any other mode, the correction
algorithm is reset. Which will also reset the number of success and attempts. The
normal operational mode is Adapt.
Hold Pressing the Hold soft key turns it green and keeps the last correction value for
the selected mode. This is a short term option. For long term use select Stored.
With HOLD active correction is engaged but not adapting to any new solution
for changes in the amplifiers or filters.
Stored Pressing the Stored soft key turns it green and selects a previously stored set of
corrections which are used as a static digital precorrection. The corrections are
saved by using the Stored Correction Sets sub window in the RTAC Page 2
screen on right Figure 3-16 on page 3-24 and at Section 3.4.2.1. Storing the
current active RTAC filter setup or operating from a previously stored setup is covered in
Section 3.4.2.1.
Bypass Pressing the Bypass soft key turns it orange. Selecting Bypass turns the
selected corrector OFF. Correction is not engaged.
RTAC State Enabled = Green. Disabled = Red.
If the RTAC status is Disabled, this indicates that RTAC will not adapt. The
RTAC can be disabled due to any of the following reasons:
- Power is in Manual control mode
- Power Calibration is active
- Transmitter is in Off state
- External Hold command is asserted
- Transmitter was turned on but output power failed to ramp up to ACTUAL
Stored Correction
Sets
Select Set 1-4.
Save Set 1-4.
This screen provides a choice of locations for storing four different RTAC
settings.
Softkeys
Setup Displays Setup screen.
Exciter Home Displays Exciter Home screen.
Table 3-13 Xmtr Home>Exciter Home>Setup>DUC/RTAC
Field Explanation