Agilent Technologies HP 8566B Spécifications Page 349

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23. Track and Hold Adjustments
23.
Track
and
Hold
Adjustments
Reference
A3A9
Track and Hold
Description
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
Equipment
Digital Voltmeter (DVM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP
345612
Procedure 1.
2.
3.
4.
5.
6.
7.
8.
9.
Place spectrum analyzer upright as shown in Figure 3-102 with
IF-Display Section top cover and A3 Digital Storage covers
removed.
Set spectrum analyzer LINE switch to ON and press
C-1.
Connect CAL OUTPUT to RF INPUT.
Connect DVM to
A3A9TP3
and ground to A3A9TPl.
Key in [CENTER FREQUENCY) 100 MHz, (FREQUENCY SPAN] 0 Hz.
Disconnect cable 7 (violet) from
A4AlJl.
Short
A3A9TPl
to
A3A9TP3,
or use an SMB snap-on short to
A3A9Jl.
DVM indication should be 0.000 fO.OO1 V dc.
Key in
Cm),
TRACE A (CLEAR-WRITE), MARKER
(j-j,
MARKER
Ln],
SWEEP
CCONT];(SHIFT)
TRACE A
ljjj
e.
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.
Adjustments 3-209
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