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Instrument settings – Teledyne LeCroy DA1855A User Manual

Page 26

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DA1855A Differential Amplifier

20

922258-00 Rev A

Remote Operation

A REMOTE connector on the rear panel of the DA1855A allows total control of the instrument
through a Teledyne LeCroy oscilloscope when connected to ProBus using the supplied cable. All of
the instrument functions can be controlled through the oscilloscope user interface.

Remote control is also possible using commands sent through the IEEE-488 bus or through RS-232
connected to the oscilloscope. The DA1855A cannot be remotely controlled without a Teledyne
LeCroy oscilloscope. See page 46 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 6.6.0.5 or higher.

Probe Coding Input

This jack is to be used with Teledyne 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 damaged 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.