HP 8340B Manual page 26

Table A-3. Calibration Constants (4 of 6)
No.
58
59
60
61
62
63
Name
RETRACE DWELL
ATTEN CONFIG
CONFIGURATION
SERIAL #
AT10SLP20GZ
AT20 SLP 20GZ
Function
Sets instrument dwell time after end of sweep
retrace.
Selects Attenuator operating
conditions.
Bits
0
through
9
-
selects attenuator switch
threshold.
A 0
entry sets the
attenuator
switch threshold at
—14 95 dBm
(ie,,,
in
coupled mode, the ALC
will
go as low as -14-95
dBm
At
-15.0 dBm,
the
ALC
is
set to —5 dBm and the attenuator
switches
in
10 dB of attenuation). A 500
entry
sets the attenuator switch threshold
at
—9.95
A 1020 entry sets the attenuator switch thresh¬
old at
-4.75.
Bit 10
-
Must be set to
1.
This allows attenuator
to be
operated over 90
dB.
Bit
11
-
Depends on the part number (p/n)
of the
A58 sweep generator
assembly. Set to
0 If
p/n
of A58
is
08340-60193
or below Set to
1 if p/n
of A58
is
08340-60298
or above.
Bit 12
-
Selects attenuator Installed or not
installed
Bit 13
-
Must be set to one.
Bit
14
-Set to zero-
Bit 15
-
Must be set
to 0.
This selects how
attenuator
is programmed.
Selects instrument options
Bit 0
-
Must be set to zero
Bit 1
-
Without or With Option 001 or 005 (No
attenuator option).
Bit
2
-
Without or With Option 004
or
005 (Rear
panel option).
Bit
13
-
Without or With
C75 Special
Storage location for the instrument's serial
number-
Slope compensation
for RF
power
at 10 dB
attenuator setting from 20 to 26.5 GHz.
Slope compensation for
RF power at
20 dB
attenuator setting from 20.0 to 26.5
GHz
Range
(Counts)
0-20
0-1020
1024
0/1
0/4096
1
0
0
0
0/2
0/4
0/8192
—
0-255
0-255
Significance
10 ms/count
0.05 dB/5 counts
90 dB operation
p/n of A58
assembly
Installed/
Not Installed
-
-
Attenuator
Programming
Without/With
Without/With
Without/With
—
0.01
dB/GHz/
count
0.01
dB/GHz/
count
A-20
Assembly-Level Service Calibration Constants Change
7
HP 8340B/41B