HP 3320A Operating And Service Manual page 164

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Top voltage measured with respective VF input H.
Bottom voltage measured with respective VF input L.
Top \/Oitage measured with VERN IN (front panell
Bottom \/Oitage measured with VERN OUT.
Top voltage measured with frequency controls set to 0000.
Bottom voltage measured with frequency controls set to
1299.
Top voltage measured with 3320A/B in remote mode.
Bottom voltage measured in local mode.
SCHEMATIC CONNECTOR
NUMBER NUMBER
INSTRUMENT TYPE
1 XA20A
"A" Model - Standard,
Options DOl, 002, 006
2
XA21A "B" Model - Standard,
Options DOl, 002, 006
4,5 XA22A
"A" Model - Option 003
"B" Model - Option 004
7,9,10 XA22A
"B" Model - Option 007
NOTE 1: The following table lists the schematic number and
connector number versus instrument type for controller board
interfacing:
Example:
NOTE 2: Logic signal levels are shown by the letters H or L
preceding the name of the line. The Hand L indicates the true state
(signal present). Voltage levels for the Hand L are:
L Data Valid - indicates the data valid line should be
a v
when
a data valid signal is present.
H
=
+
5 V
L
=
0 V
H Delay Flag - indicates the delay flag line should be
+
5 V
when a delay flag signal is present.
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