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Model l l 180A
Section I
SECTION
GENERAL INFORMATION
1-1. INTRODUCTION.
1-2. The Hewlett-Packard Model 3480A/B Multifunction
Digital Voltmeter may be equipped with Option 005 Data
Storage. Up to 50 complete DVM readings may be entered
into Data Storage at up to 1000 readings per second. The
output of these stored readings may be governed by an
external device. Data Storage is ideal for use with a digital
recorder where readings may be taken at high speed, stored,
then outputted at 10 to 20 lines per second.
1-3. Each stored reading includes all information generated
by the 3480A/B including input voltage magnitude, range,
function, polarity, and
overload.
The number of readings
stored is selectable up to 50. When stored readings are
outputted, two additional digits are added to identify the
reading number. All output lines are isolated from the
3480A/B input
terminals.
1-4. Option 005 Data Storage includes Isolated BCD. When
Data Storage is disabled, the output of the 3480A/B
becomes identical to that of Isolated BCD.
1-5. The 3480A/B offers a wide variety of plug-in units
which may be used with Data Storage. These plug-ins
include the 3481 A with a single 10 V de range, the 3482A
with 5 de ranges, the 3484A with 5 de ranges, 5 true rms ac
ranges and 6
S1
ranges and the 3485A with up to 50 input
channels plus 3 de
ranges.
1-6. Any of the above capabilities including Data Storage
may be purchased in a self-contained data logger, the
2070A, which includes the 3480A Multifunction DVM, the
5055A Digital Recorder plus any 3480
plug-in.
A special
rear panel includes the major Data Storage control lines in
the form of easy to use switches.
1-7. Accessories Furnished (with Data Storage only).
6 foot
"Y"
cable with Remote Control lines and BCD lines
split and left unterminated. Other end has 100 pin connec-
tor for Data
Storage.
1-8. Accessories Available (with Data Storage only).
-hp- 11181
A:
Data Storage Cable for use with 5050B or
5055A Digital
Recorders.
This is a "Y" cable with Remote
Control lines split and left unterminated and the BCD lines
terminated with a 50 pin connector for use with a digital
recorder. Other end has 100 pin connector for Data
Storage.
3480A DIGITAL VOLTMETER
3481A BUFFER AMPLIFIER
+
I
4
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4
DATA STORAGE
may be used with any combination
of these mainframes and plug-ins.
1
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3482A DC RANGE UNIT
.....
-
..
-
34808 DIGITAL VOLTMETER
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I
3484A MULTI-FUNCTION UNIT
2070A DATA LOGGER
3485A SCANNING UNIT
Figure 1-1. Data Storage.
1-1
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