Agilent Technologies HP 8566B Spécifications Page 223

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Equipment
Procedure
1.
+
10
V
Temperature
Compensation
Supply
Check
A4A4
LC
Adjustments
5.
8. 21.4 MHz Bandwidth Filter Adjustments
Digital Voltmeter (DVM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 3456A
10
dB
Step Attenuator . . . . . . . . . . . . . . . . . . . . . . . HP
355D,
Option H89
1
dB
Step Attenuator . . . . . . . . . . . . . . . . . HP 3556, Option H25
Crystal Filter Bypass Network
(2
required) . . Refer to Figure 3-109
Position the spectrum analyzer upright as shown in Figure
Figure 3-40 and remove the IF-Display Section cover.
2.
Set the spectrum analyzer LINE switch to ON and press
@Y??iQ.
3.
4.
Connect DVM to
A4A5TPl(+
10 VF).
DVM indication should be between
+9.0
V dc and + 10.0 V dc. If
voltage is not within tolerance, perform Adjustment Procedure 10,
“Step Gain and 18.4 MHz Local Oscillator Adjustments,” before
continuing.
Connect spectrum analyzer CAL OUTPUT to RF INPUT through 1
dB
and 10
dB
step attenuators, as shown in Figure 3-40. Set step
attenuators to 0
dB.
6.
Disconnect cable 97 (white/violet) from A4A8Jl and connect to
cable A4A6J 1.
7.
Key in (CENTER
FREQ]
100 MHz,
CREs]
100
kHz,
CFREQUENCY
SPAN) 200
kHz,
and press LIN pushbutton.
8.
Press [REFERENCE
LEVEL]
and adjust front-panel knob to set signal
peak approximately 2 divisions down from top CRT graticule line.
9.
Adjust
A4A4C67
LC CTR and
A4A4C19
LC CTR for maximum
MARKER level as indicated by CRT annotation. See Figure 3-41
for location of adjustments. If unable to adjust LC CTR
adjustments for satisfactory signal amplitude, increase or decrease
value of
A4A4C17
and
A4A4C70.
Refer to
Table
3-3 for range of
values.
Figure 3-41.
Location of
A4A4
21.4 MHz LC Filter Adjustments
10.
Key in
(RESBW)
1 MHz, and (SPAN) 2 MHz, MARKER
(
PEAK SEARCH
),
MARKER
a.
Adjustments 3-93
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