Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent HP 34970A Opt. 001 DMM Installation
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Agilent 34970A / Option 001
Internal DMM Assembly
Installation Instructions for 34970-80010 Retrofit Kit
1 Disconnect the power cord.
2 Remove the outer cover from the Agilent 34970A.
To remove the cover from the instrument, follow the procedures shown
in chapter 6 of the 34970A Service Guide.
3 Connect the internal DMM ribbon cable to the main circuit board.
Connect the loose end of the grey ribbon cable to connector J202 on the
34970A main circuit board (34970-66511). Press down firmly on the
ribbon cable connector and secure the cable in place with the locking clips.
Snap the Locking Clips over
the top of the connector to
secure the Ribbon Cable
Ribbon Cable
1
4 Install the internal DMM circuit board into the chassis.
Position the internal DMM circuit board inside the instrument chassis
by tilting it at an angle as shown below. Be sure to position the circuit
board over the tabs in the chassis as shown. Then, lower the assembly
into the chassis until it is parallel with the 34970A circuit board.
5 Lock the internal DMM circuit board in place.
Slide the internal DMM circuit board to the left (toward the rear of the
instrument) until it locks in place. You will hear a click when it is
properly locked in place.
Make sure that shield is locked
in place behind this tab
2
6 Twist the internal DMM input cable.
Twist the internal DMM input cable (labeled P101) at least one full turn
before plugging it into the backplane connector. If you do not twist the
cable as shown, certain specifications will be compromised.
7 Insert the DMM input cable into the backplane connector.
Insert the internal DMM input cable into the backplane connector
as shown. Press firmly to ensure a good electrical connection.
8 Enable the internal DMM.
After installing the internal DMM assembly, you must enable it for
operation. From the front-panel, select the DMM ENABLED choice from
the Utility menu. From the remote interface, use the INST:DMM command.
3
9 Modify the Labeling on the Rear Panel.
If you originally ordered the 34970A without the internal DMM, a solid
black circle should be visible above the rear-panel "Opt. 001" label.
After installing the internal DMM retrofit kit, be sure to draw an "X"
through the black circle using a permanent marker as shown below.
Internal DMM
is NOT installed.
2SW
Internal DMM
is installed.
2SW
10 Replace the outer cover on the Agilent 34970A.
To replace the cover on the instrument, follow the procedures shown in
chapter 6 of the 34970A Service Guide.
Calibration Information
The internal DMM was calibrated before it was shipped from the factory
(a calibration certificate is included). However, after installing the internal
DMM, you will want to make sure that you run the Zero Adjustment
procedure as outlined in chapter 4 in the 34970A Service Guide.
The internal DMM is guaranteed to meet the instrument's 1-year
accuracy specifications.
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Retrofit Instructions 34970-90052
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