Teledyne DA1855A, Operator'S Manual

Page: 58 / 94

DA1855A Differential Amplifier
52 922258-00 Rev A
Input-Resistance
PRx:PINPUTR,PRx:PINR
Command/Query
Description The
PRx:PINPUTR
command sets the input resistance for both inputs of
the differential amplifier. The valid arguments are 1M or 100M when the
differential amplifier input attenuation is set to ÷1 and an attenuating probe
is not being used. When an attenuating probe is attached to the differential
amplifier, or the internal attenuation is set to ÷10, only 1M may be selected.
The units of the arguments are Ohm.
The
PRx:PINPUTR?
query returns the input resistance setting for the
differential amplifier connected to the specified channel.
Command Syntax
<channel>:PINputR<input resistance> <channel>:{PR1,
PR2, PR3, PR4}
<input resistance>:={1M or 100M}
when the internal
attenuation is ÷1, without attenuating probe, or
={1M}
when the internal
attenuation is ÷10 or an attenuating probe is used.
Query Syntax <channel>:PINputR?
Response Format <channel>:PINR<input resistance>
Example The following command sets the input resistance of the differential
amplifier connected to channel1 to 1 MΩ.
CMD$=”PR1:PINR 1M”:CALL IBWRT(SCOPE%,CMD$)