Track And Hold Adjustments - HP 8566B Adjustment Manual

The CAL OUTPUT signal is connected to the RF INPUT. The spectrum
analyzer is placed in zero frequency span to produce a dc level output
from the IF-Video section and this dc level is regulated by adjusting
the reference level. The Offsets and Gains on the Track and Hold
assembly are adjusted for proper levels using a DVM.
Figure 3-102. Track and Hold Adjustments Setup
Digital Voltmeter (DVM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 345612
Place spectrum analyzer upright as shown in Figure 3-102 with
1 .
IF-Display Section top cover and A3 Digital Storage covers
removed.
2. Set spectrum analyzer LINE switch to ON and press C-1.
Connect CAL OUTPUT to RF INPUT.
3.
Connect DVM to A3A9TP3 and ground to A3A9TPl.
4.
[
5. Key in
CENTER FREQUENCY
6. Disconnect cable 7 (violet) from A4AlJl.
7. Short A3A9TPl to A3A9TP3, or use an SMB snap-on short to
8. Key in Cm), TRACE A
MARKER Ln], SWEEP CCONT];(SHIFT) TRACE A ljjj e.
9. Adjust A3A9R59 (T/H) OFS until MARKER A level indication as
indicated by CRT annotation flickers back and forth between .OO
and .lO dB. See Figure 3-103 for location of adjustment.

23. Track and Hold Adjustments

) (
100 MHz,
FREQUENCY SPAN
( - ),
MARKER (j-j,
CLEAR WRITE
]
0 Hz.
Adjustments 3-209