User's Manual

Model 1150A DVOR
3-74 Rev. - November, 2008
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Table 3-14 Sideband Generator (1A4A1, 1A4A2, 1A4A5, 1A4A6) Controls and Indicators
TP0 Ground
TP1
Phase detector voltage. This is a DC voltage representing the detected phase difference of the input
to the output of Sideband 1 (1A4A1, 1A4A5) or Sideband 3 (1A4A2, 1A4A6). If the control loop
is locked this voltage should be nearly 0.9 volts.
TP2
This test point is the detected output of the Sideband 1 (1A4A1, 1A4A5) or Sideband 3 (1A4A2,
1A4A6) output. This signal is a rectified 360 Hz waveform in DVOR mode.
TP3
This test point is the Sideband 1 (1A4A1, 1A4A5) or Sideband 3 (1A4A2, 1A4A6) Manual Phase
Control Voltage. This is a DC voltage representing the phaser control voltage used to align the
phase between the Carrier amplifier and the sideband amplifier.
TP4
This test point is the Sideband 1 (1A4A1, 1A4A5) or Sideband 3 (1A4A2, 1A4A6) Mean Phase
Control Voltage. This is a DC voltage representing the mean (slow) phaser control voltage.
TP5
This test point is the Sideband 1 (1A4A1, 1A4A5) or Sideband 3 (1A4A2, 1A4A6) Phase Error
Voltage. This is a DC voltage representing the mean (slow) error control voltage. If the control
loop is locked this voltage should be nearly 0.9 volts.
TP6
This test point is the Sideband to Sideband output Phase Error Voltage. This is a DC voltage
represents the difference in phase in this assembly between Sideband 1to 2 or Sideband 3 to 4. If
the phase difference is 0 degrees this voltage should be nearly 0.0 volts.
TP7
Phase detector voltage. This is a DC voltage representing the detected phase difference of the input
to the output of Sideband 2 (1A4A1, 1A4A5) or Sideband 4 (1A4A2, 1A4A6). If the control loop
is locked this voltage should be nearly 0.9 volts.
TP8
This test point is the detected output of the Sideband 1 (1A4A1, 1A4A5) or Sideband 3 (1A4A2,
1A4A6) output. This signal is a rectified 360 Hz waveform in DVOR mode.
TP9
This test point is the Sideband 2 (1A4A1, 1A4A5) or Sideband 4 (1A4A2, 1A4A6) Manual Phase
Control Voltage. This is a DC voltage representing the phaser control voltage used to align the
phase between the Carrier amplifier and the sideband amplifier.
TP10
This test point is the Sideband 2 (1A4A1, 1A4A5) or Sideband 4 (1A4A2, 1A4A6) Mean Phase
Control Voltage. This is a DC voltage representing the mean (slow) phaser control voltage.
TP11
This test point is the Sideband 2 (1A4A1, 1A4A5) or Sideband 4 (1A4A2, 1A4A6) Mean Phase
Error Voltage. This is a DC voltage representing the mean (slow) error control voltage. If the
control loop is locked this voltage should be nearly 0.9 volts.
R1
This adjustment point is the Sideband 1,3 Mean Phase Control Voltage Set Adjustment and is
adjusted so that TP5 is 0.9 VDC along with TP4 between 2 and 10 VDC.
R2
This adjustment point is the Sideband 1,3 Detector Calibration Adjustment. It adjusts the power
level displayed on the PMDT.
R3
This adjustment point is the Sideband 1,3 power output adjustment. Clockwise increases power.
This is used for setting output power.
R4
This adjustment point is the Sideband 2 ,4 Mean Phase Control Voltage Set Adjustment and is
adjusted so that TP7 is 0.9 VDC along with TP10 between 2 and 10 VDC.
R5
This adjustment point is the Sideband 2, 4 Detector Calibration Adjustment. It adjusts the power
level displayed on the PMDT.
R6
This adjustment point is the Sideband 2, 4 power output adjustment. Clockwise increases power.
This is used for setting output power.