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Operating the Probe
Recommended Test Equipment
Function Select
The easiest way to control the function select lines is contact closures between the lines
and Digital common (pin 2) of the remote input connector. (TTL compatible control
signals can be used; but to avoid problems with ground loops, they must be electrically
isolated.) The following truth table shows the functions provided by the function select
lines. For the Remote Inputs, “0” represents a closure and “1” represents an open circuit.
Remote Functions Select Truth Table
Variable Offset
The remote variable offset can be used when the dc couple function is remotely selected.
The offset voltage must be referenced to the External offset common (pin 4) of the
remote input connector. It must be electrically isolated from the controlling system. The
following table shows the offset range and remote offset requirements for probe and
adapter combinations.
Remote Offset Input Requirements
Cleaning Requirements
If the instrument requires cleaning: (1) Remove power from the instrument. (2) Clean
the external surfaces of the instrument with a soft cloth dampened with a mixture of
mild detergent and water. (3) Make sure that the instrument is completely dry before
reconnecting it to a power source.
Remote Input Function
A1R
(Pin 1)
A0R
(Pin 6)
0 0 0.05 Hz Reject
0 1 0.5 Hz Reject
105 Hz Reject
1 1 DC Couple
Offset Range Remote
Requirements
Probe alone ± 20 V ± 10 V
Probe with 10x adapter ± 200 V ± 10 V
Probe with 100x adapter ± 500 V ± 2.5 V