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Model 6517B Electrometer Reference Manual
Power-up
Line power connection
Follow the procedure below to connect the Model 6517B to line power and turn on the instrument.
Operating the instrument on an incorrect line voltage may cause damage to the instrument, possibly
voiding the warranty.
The power cord supplied with the Model 6517B contains a separate protective earth (safety
ground) wire for use with grounded outlets. When proper connections are made, the
instrument chassis is connected to power-line ground through the ground wire in the power
cord. In the event of a failure, not using a properly grounded protective earth and grounded
outlet may result in personal injury or death due to electric shock.
Do not replace detachable mains supply cords with inadequately rated cords. Failure to use
properly rated cords may result in personal injury or death due to electric shock.
1. Before plugging in the power cord, make sure that the front panel power switch is in the off (O)
position. Be sure that line input voltage is set to the correct range for the power supply being used
to power the Model 6517B.
Line voltage is pre-set at the factory, but may be reset in the field by adjusting the voltage selector
behind the left ear (when looking at the front panel of the Model 6517B). To access the voltage
selector, first remove the handle then remove the left mounting ear. The current voltage setting is the
marking closest to the small circle.
2. Connect the female end of the supplied power cord to the AC receptacle on the rear panel.
Connect the other end of the power cord to a grounded AC outlet.
Line fuse replacement
A rear panel fuse located in the power module protects the power line input of the instrument. A rear
panel fuse drawer is located below the AC receptacle (see
number 8). This fuse protects the power line input of the instrument. If the line voltage fuse needs to
be replaced, perform the following steps.
Make sure the instrument is disconnected from the AC line and other equipment before
changing the line voltage setting or replacing the line fuse.
6517B-901-01 Rev. C / August 2015
Section 2: Getting started
Rear panel summary
(on page 2-3), item
2-5
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