Teledyne DA1855A, Operator'S Manual

Page: 57 / 94

Operator’s Manual
922258-00 Rev A 51
Offset
PRx:OFFSET, PRx:OFST
Command/Query
Description The
PRx:OFFSET
command sets the Precision Voltage Generator (PVG)
value of the DA1855A Differential Amplifier connected to the specified input
channel. The oscilloscope channel offset is always set to 0 Volt.
The maximum range and resolution is determined by the effective gain of
the differential amplifier. Refer to page 19, Table 2, Effective Offset Range
with ÷11 Probe and Table 3, Effective Offset Range with ÷100 Probe for the
list of available ranges.
Note : The attenuation of any external probe is factored into the effective
gain. Changing or removing the probe from the differential amplifier may
change the maximum range.
If an out-of-range value is entered, the differential amplifier will set the PVG
to the closest valid value and the VAB bit (bit 2) in the STB register will be
set.
The
PRx:OFFSET?
query returns the offset voltage of the differential
probe connected to the specified channel.
Command Syntax
<channel>: OFfSeT<voltage> <channel>:={PR1, PR2,
PR3, PR4} <voltage>:
= See Table 2, Effective Offset Range with
÷11 Probe and Table 3, Effective Offset Range with ÷100 Probe for valid
ranges.
Query Syntax
<channel>:OFfSeT?
Response Format
<channel>:OFST<voltage>
Example The following command sets the PVG voltage of the differential amplifier
connected to channel 1 to 6.38 Volt:
CMD$=”PR1:OFST 6.38”: CALL IBWRT(SCOPE%,CMD$)