Model 1600A High Voltage Probe
Keithley Instruments
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
http://www.keithley.com
Safety and Characteristic Information
PA-148 Rev. B / November 2014 *PPA148B* 1
This high voltage probe is designed to preve nt accidental s hock to the operator when p roperly
used. This operating note must be rea d and fully understood prior to using the probe.
Model 1600A High Voltage Probe Safety and Characteristic Information
Characteristics
Input resistance approximately 1000 MΩ
Division ratio 1000:1
Maximum working voltage 40 kV DC or 28 kV AC 50/60 Hz
Accuracy DC volts: ±1% (1 kV to 20 kV), ±2% (20 kV to 40 kV)
AC volts: Typically 5% at 50/60 Hz
Temperature coefficient Less than 200 ppm / ºC
Operating temperature 0 ºC to +50 ºC
Storage temperature -20 ºC to -70 ºC
Cable length 1 meter
Safety note:
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.
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
Do not attempt to take measurements from sources where the chassis or returm lead is not
grounded.
This ground connection is critical to the safe operation of the probe. Failure to make this
connection when making high volta g e measurements may result in personal injury o r damage
to the probe or voltmeter. This co nnec tion mus t always be made BEFORE the probe ti p com es
into contact with the high voltage and must not be removed until after the probe tip has been
removed from the voltage source.
Do not connect the ground clip lead to the h igh voltage source or the probe tip to ground for
any reason.
2 PA-148 Rev. B / November 2014
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