Agilent Technologies 8590 Series Service Manual page 127

Analyzers assembly-level repair
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4. Press
Use only 75 Ω cables, connectors, or adapters on instruments equipped
CAUTION
with 75 Ω inputs or damage to the input connectors will occur.
5. Connect the analyzer RF OUT to the RF INPUT using a BNC cable
6. Perform the tracking generator self-cal routine by pressing the
7. Press
8. Press
9. Press the following analyzer keys.
10.Connect the ground (−) lead of the DMM to A7TP1. Connect the
11.Adjust A7A1R43 and A7A1R49 fully clockwise.
12.Connect the MOD_TP test point, located on the A7A1 tracking
Chapter 2
Note that if the display shows CAL SIGNAL NOT FOUND, the routines
default settings are not sufficient to find the signal. Press
before performing the CAL routines. This causes the routines to
Hz
bypass the CAL signal check.
on the analyzer.
CAL STORE
and adapters.
following analyzer keys.
,
CAL, More 1 of 4
More 2 of 4
Wait for the completion of the routine (less than 1 minute).
.
CAL STORE
, then wait for preset routine to finish. Set the
PRESET
analyzer by pressing the following keys.
, 300,
FREQUENCY
, 0,
SPAN
Hz
75 Ω only: Press
AMPLITUDE
Set the analyzer reference level to +12 dBm.
,
AUX CTRL
TRACK GENSRC PWR ON OFF
,
,
CAL
More 1 of 4
More 2 of 4
,
SERVICE DIAG
More 1
ALC TEST
This breaks the ALC loop, causing TG UNLVL to appear on the screen;
this is normal.
positive (+) lead to A7TP2.
generator control assembly, to A7TP2 by pressing
, then type in the following:
TITLE
DET TGMOD;
18. Modulator Offset and Gain for Option 010 or 011
,
CAL TRK GEN
MHz
,
,
More 1 of 2
AMPTD UNITS
,
,
,
More 2
More 3
More 4
Making Adjustments
, −37,
FREQ
,
.
dBm
(ON)
,
More 5
DISPLAY, CHANGE
127

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