Operation
DA1855A-OM-E Rev A
ISSUED: July 2002
3-13
oscilloscope. The DA1855A cannot be remotely controlled
without a LeCroy oscilloscope. Refer to Section 7 for a
description of the Remote Commands.
When the ProBus cable is installed, the buttons on the front panel
of the differential amplifier are disabled.
Note:
Remote operation requires software version V8.1.0 or higher.
Probe Coding Input
This jack is to be used with LeCroy DXC series probes to detect
the probe attenuation factor. Other manufacturer’s probes with
standard probe coding capability will be properly decoded
through the DA1855A's front panel
+INPUT
BNC connector.
INSTRUMENT SETTINGS
The DA1855A output is intended to connect directly to the input
of an oscilloscope, or other instrument, but it is important to
observe some rules so that the DA1855A delivers its specified
performance.
CAUTION
A properly terminated differential amplifier can deliver an
output voltage of ±0.5 Volt. The output is DC coupled and
will follow any DC component applied to the input. Some
instruments such as spectrum analyzers could be dam-
aged from overload or DC components.
Retained Settings
All front panel settings, including Precision Voltage Generator
(PVG) settings are retained when the instrument is turned off.
The DA1855A return to the same state they were in when power
was removed.
When used without ProBus interface, the instrument can be set to
factory default settings by pressing the
V
COMP
and
V
DIFF
buttons
simultaneously. Table 3-4 lists the factory default settings.
