Specifications

5/9/13 888-2857-001 3-83
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
NOTE:
If temperatures are below the maximum value (given in parenthesis) the indicator
background will be Green. If above the maximum value, background will be Red.
The Tach 1 and Tach 2 fields are color coded as follows: OK = Green, Warning =
Yellow, Fault = Red.
Modulator FPGA Warning temperature is 80 degrees C. Maximum temperature is 85 degrees C. If
the temperature rises above 85 degrees C for a period of three or more seconds,
both the Modulator and RTAC FPGAs de-program to protect the exciter from
damage. Warning = yellow and Fault = red.
RTAC FPGA Warning temperature is 80 degrees C. Maximum temperature is 85 degrees C. If
the temperature rises above 85 degrees C for a period of three or more seconds,
both the Modulator and RTAC FPGAs de-program to protect the exciter from
damage.
Ambient Ambient exciter temperature. Normal temperature range is between -30 degrees C
and 50 degrees C. Warning temperature is 80 degrees C.
Fans
Fan Status The Fan Status field provides the summary fan status of the two front panel fans. If
both fans are OK, the Fan Status field is Green. If either fan has a warning, or one
fan is faulted, the Fan Status field is Yellow. If both fans are faulted, the Fan Status
field is Red. The exciter will operate on only one fan.
Tach 1 Tach 1 and Tach 2 fields provide readouts of the two exciter fan speeds. The value
within the parenthesis is the minimum allowable fan speed. The Tach 1 and Tach 2
fields are color coded as follows: OK = Green, Warning = Yellow, Fault = Red.
Refer to Table 3-56 on page 3-83 for fan speed status:
Tach 2 (See Tach 1)
Power Supply (VDC) The values given in the parenthesis provide minimum and maximum voltage
limits, with the nominal supply voltage given next. If the indicated voltage in the
right hand window is within range (10% of nominal), its background will be
Green.
Softkeys
Status Displays the Status screen.
Exciter Home Pressing this soft key displays Exciter Home Screen, on right Figure 3-12
on page 3-17.
Table 3-56 Fans Tach 1 and Tach 2
Fan Speed (rpm) Status
<= 2400 Fault
2401 – 2880 Warning
2881 – 46079 OK
>= 46080 Warning (Check Fan Filter)
Table 3-55 Status >Signal Processor (1 & 2)