Keithley 1600A User Manual

Model 1600A High Voltage Probe

Keithley Instruments, Inc.

28775 Aurora Road
Cleveland, Ohio 44139
[phone]
www.keithley.com

User’s Guide

INC CROUND I ND MUSI DI

COMMCND ID SANIN

PA-148 Rev. A / 09-05

2

WARNING This high voltage probe is designed to prevent accidental shock to

the operator when properly used. This operating note must be read
and fully understood prior to using the probe.

Specifications

Input resistance: Approx. 1000m Ω

Division ratio: 1000:1

Maximum working voltage: 40KV DC or Peak AC, 28KV RMS AC

Accuracy: DC volts: ±1%(1KV to 20KV), ±2%(20KV to 40KV)

AC volts: Typically 5% at 60Hz

Te mperature Coefficient: Less than 200ppm/ºC

Operating temperature: 0ºC to +50ºC

Storage temperature: -20ºC to -70ºC

Cable length: 1 meter

Safety precautions

This high voltage probe must only be used by personnel who are trained, experienced, or otherwise
qualified to recognize hazardous situations and who are trained in the safety precautions that are
necessary to avoid possible injury when using such a device.

Do not work alone when working with high voltage circuits.

For your own safety, inspect the probes for cracks and frayed or broken leads before each use. If defects
are noted, DO NOT use the probe.

Hands, shoes, floor, and work bench must be dry. Avoid making measurements under humid, damp, or
other environmental conditions that might affect the safety of the measurement situation.

If possible, always turn the high voltage source off before connecting or disconnecting the probe.

The probe body should be kept clean and free of any conductive contamination. Refer to the section on
cleaning.

Operation

1. Connect the plugs to the volts (HI) and corn (LO) input terminals of your voltmeter.

2. Select the desired voltmeter function and range: do not use autoranging.

3. Whenever possible, turn the high voltage source off before making any connections.

4. Connect the divider probe common lead (alligator clip) to a good earth ground or reliable chassis
ground.

WARNING Do not attempt to take measurements from sources where the

chassis or return lead is not grounded.

3

WARNING This ground connection is critical to the safe operation of the probe.

Failure to make this connection when making high voltage
measurements may result in personal injury or damage to the probe
or voltmeter. This connection must always be made BEFORE the
probe tip comes into contact with the high voltage and must not be
removed until after the probe tip has been removed from the high
voltage source.

WARNING Do not connect the ground clip lead to the high voltage source or the

probe lip to ground for any reason.

WARNING Before turning the high voltage on, make sure that no part of your

body is in contact with the device under test.

5. Measure the voltage remembering that the voltage being measured is 1000 times greater then the
voltmeter reading.

6. Turn the high voltage off.

7. Disconnect the probe tip from the high voltage source BEFORE removing the ground clip lead.

Cleaning

Clean only the exterior probe body and cables. Use a soft cotton cloth lightly moistened with a mild
solution of detergent and water. Do not allow any portion of the probe to submerge at any time.

Dry the probe thoroughly before attempting to make voltage measurement.

Do not subject the probe to solvent fumes as these can cause deterioration of the probe body and cables.