Rf Attenuator Calibration; Description - HP 8340B Manual

Chapter
14.
RF Attenuator Calibration
14.0 Description
This program performs three functions:
•
It
adjusts the instrument's attenuator calibration constants to compensate for errors In
the
90 dB step attenuator
(for those instruments so equipped)
•
It
verifies power accuracy
at
each attenuator step
•
It sums the attenuator
performance data
with output power accuracy data and compares
the results with the
instrument's performance specifications
NOTE
This test will
not run unless
the
IF
attenuator has been characterized per
instructions in Chapter
6
and the Output Power Accuracy test has been
run.
The data files
generated
by
the
IF
attenuator and Output Power
Accuracy programs must be
on
the data disc currently in the disc drive.
14.1
Test Equipment
Local Oscillator
Spectrum Analyzer
.....-..„„
- -
„ „
-
Mixer
„„.„„„
.
. . . .. „. „ . „ „ „ „ „ „
20 dB Attenuator
.-„.-.
10
dB Attenuator
....
.... ..
... „
..
„ ...
Step Attenuator (Calibrated
at
1
MHz)
„
Low Pass
Filter
-,
....
„ „ „ „
Amplifier
„ „ „
-
.
. -
„ ... ....
Cables:
Semi-rigid coax,
SMA (m)
to
SMA (m)
BNC (m)
to
BNC
(m),
(7 required)
-
. „
Adapters:
APC 3.5 (f)
-
APC 3.5
(f)1
- -
......
..
APC 3.5 (f) to
Type
N
(m)2
„ „ „ .. .. .. . „ „
SMA (m) to BNC (f)
- - - „ - - „
1
Required
tor an
HP 8340A/B OUT
only
2
Required for an
HP
8341A/B OUT
only
„ „
HP 8340A Option H01
or
HP 8340A/B
Option 001
„ - -
.....
HP 3585A
„ . „ „ -
HP P/N 0955-0307
HP 8493C Option 020
- -
„
HP
8493C Option 010
„ „ „
- - -
„ „ „
HP 355D
„ „ „
„
„
HP P/N 9135-0260
.
HP 8447F
HP P/N
08340-20124
„
HP P/N 8120-1840
HP P/N 5061-5311
HP P/N 1250-1744
HP P/N 1250-1200
HP 8340A/B
and
HP 8341A/B
RF Attenuator Calibration 37