Operator’s Manual
922258-00 Rev A
11
Optional Accessories
•
Service Manual, containing adjustments, repair and replacement part information P/N:
DA1855A-SM-E.
•
DXC100A, ÷10 / ÷100 Passive Differential Probe.
•
DXC200, ÷1 Passive Differential Probe.
•
DXC5100, ÷100 2.5 K Passive Differential Probe Pair
•
DA101, External ÷10 Attenuator.
Operation
General Information
The DA1855A has been designed to be used with oscilloscopes equipped with a ProBus interface.
Connecting the Differential Amplifier to the oscilloscope through the ProBus interface will
automatically control all the required settings from the oscilloscope and will lock-out the DA1855A
front panel controls. All front panel controls are now accessible through the oscilloscope user
interface. The DA1855A user interface can be viewed from the Channel setup dialog for the channel
to which it is connected. The DA1855A front panel controls will operate manually when the
Differential Amplifier is connected to an oscilloscope not provided with a ProBus interface.
NOTE
: Removing the ProBus interface cable with the differential amplifier still powered up, requires
the DA1855A to be turned OFF and ON to access the front panel controls.
Dynamic Range
The basic amplifier dynamic range in X1 Gain and ÷1 Attenuation is ± 0.500 V. Changing the gain and
or attenuation will affect both the Differential Mode and Common Mode ranges.
The Differential Mode range is scaled by both gain and attenuation, while the Common Mode range
is scaled by attenuation only.
Gain
Atten*
Differential
Mode*
Common Mode*
1
÷1
± 0.5 V
± 15.5 V
1
÷10
± 5.0 V
± 155 V
10
÷1
± 50 mV
± 15.5 V
10
÷10
± 0.5 V
± 155 V
* Attenuation, Common Mode and Differential Mode ranges are scaled with external probe attenuation. A ÷10
probe will increase all these values by a factor of 10.
Содержание DA1855A
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