HP 3320A Operating And Service Manual page 158

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hp PorI
No. 03320-66512
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NOTE 1: The following table lists the schematic number and
connector number versus instrument type for controller board
interfacing:
SCHEMATIC CONNECTOR
NUMBER NUMBER INSTRUMENT TYPE
2 XA21A
"B" Model - Standard.
Options 001, 002, 006
4.5 XA22A
"B" Model - Option 004
9,10 XA22A "B" Model - Option 007
NOTE 2: Logic signal levels are shown by the letters H or L
preceding the name of the line. The Hand L indicate the true state
(signal present). Voltage levels for the Hand L are:
H
=+5V
L=OV
Example:
H Delay Flag - indicates the delay flag line should be
+
5V
when a delay flag signal is present.
L Data Valid - indicates the data valid line should be 0 V when
a data valid signal is present.
"
NOTE 3: 1C4 is connected to function as a Monostable Flip-flop
with negative edge triggering. The
Q
output will remain high for
approximately 5 seconds. This IC is identical to Fairchild 9601.
Top voltage for Response Slow.
Bottom voltage for Response Fast
Note: in local mode response is always slow
Top voltaoe measured with BCD Inputs on A11 Assembly
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(Schematic 21 ) at 999%
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Bottom voltage measured With BCD
J
"puts on A 11 Assembty
at 000.
See Schematic 21 , Note 2.
A
Top voltage. Leveling ON.
}.!.(
Bottom voltage, Leveling OFF.
Top voltage, normal operation.
*
Bottom voltage, overload condition.
A.
Typically
+
2 V de but must remain within ±.2 V dc with
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any change in amplitude setting with Leveling ON.