Tracking Oscillator Adjustment Setup - HP 8560A Service Manual

20. Tracking Oscillator Adjustment (Option 002)
Procedure
1. Remove the A10 Tracking Generator Assembly as described in Chapter 3. With the A10
Tracking Generator positioned next to the the HP 8560A, reconnect W14 (lo-wire ribbon
cable) to AlOJl. Reconnect W48 to AlOJ8. Connect the 50 R termination to AlOJ3.
2. Connect the equipment as shown in Figure 2-23. The frequency counter provides the
frequency reference for the synthesized sweeper and the HP 8560A.
3. Set the HP 8560A LINE switch on. Press (mCTRL), TRACKING GENRATOR , SRC PWR ON,
five minutes. Set the controls as follows:
C E N T E R F R E Q
SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
4. Press INSTR PRESET on the synthesized sweeper and set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2107GHz
P O W E R L E V E L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +12dBm
FREQUENCY STANDARD Switch (rear panel) . . . . . . . . . . . . . . . . . . . . . . EXT
5. Set the frequency counter controls as follows:
SAMPLE RATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully CCW
10 Hz-500 MHz / 500 MHz-26.5 GHz Switch . . . . . . . . . . . . . . . . 10 Hz-500 MHz
50 R - 1MR Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 fl
6. Remove the dust cap screw used to seal the tracking oscillator adjustment.
7. On the HP 856OA, press (m), TRACKING GEMRATOR , MORE 1 OF 3, MAN TRK ADJ ,
2-72 Adjustment Procedures
Figure 2-23. Tracking Oscillator Adjustment Setup
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..300MHz