User and Programming Manual
XDS Series
43
5.4.3
Multi box remote control
Programming of voltage or current limit on auxiliary unit(s) (-AUX) cannot be done. Any attempt to
send an output programming command will result in a –200,”Exection Error”. All other commands
remain active however, including output on/off and measurement queries. If the output is
controlled remotely, the control program should always enable the output of the auxiliary units
before enabling the master’s output. The reverse is true for turning the output off.
Voltage measurements need only be done from the master unit. To obtain accurate current and
power measurements, it is recommended to query all units and sum the data for total current and
power readings. The master chassis of a multi-box system in parallel will not provide aggregate
current or power measurements. To obtain these, the user must query the measurements from
the master and all aux chassis and sum. Simply multiplying the value measured by the master by
the total number of chassis may result in errors due to imperfect sharing.
.
5.5 RPV
Mode
RPV stands for Remote Programming of Voltage. In this mode, the front panel voltage knob is
rendered inoperative and an analog input is used to control the output voltage. This mode is
available on a Master unit only.
Units configured for auxiliary operation (-AUX) or -RPC cannot be used with RPV.
There are two discrete inputs available for RPV mode on connector J22 (DB15) at the rear panel.
Input pin 4 provides a 10VDC range input; input pin 11 provides a 5VDC range input. Both inputs
are referenced to pin 14 (ISO COM).
These inputs can be calibrated using adjustment pot R103 but only one adjustment is available
for either input so the unit must be calibrated for the required mode of operation.
5.6 RPC
Mode
RPC stands for Remote Programming of Current Limit. In this mode, the front panel current knob
is rendered inoperative and an analog input is used to control the current limit. This mode is
available on a Master unit only.
If the XDS is to be used as a pseudo current source with analog control, the output voltage must
be set to a high enough level given the load applied to ensure the XDS operates in Constant
Current mode (CC). If the load is such that the set voltage is exceeded, the XDS will revert to
constant voltage modes and the current will drop below the set level.
Units configured for auxiliary operation (-AUX) or –RPV cannot be used with RPC.
There are two discrete inputs available for RPV mode on connector J22 (DB15) at the rear panel.
Input pin 4 provides a 10VDC range input; input pin 11 provides a 5VDC range input. Both inputs
are referenced to pin 14 (ISO COM).
These inputs can be calibrated using adjustment pot R103 but only one adjustment is available
for either input so the unit must be calibrated for the required mode of operation.
Summary of Contents for XDS 100-100
Page 4: ...User and Programming Manual 4 XDS Series Electrical Safety Symbols Used in This Manual ...
Page 27: ...User and Programming Manual XDS Series 27 Figure 3 5 Outline Drawing XDS DC Supply ...
Page 41: ...User and Programming Manual XDS Series 41 Figure 5 4 Parallel Cable Interconnect Accessory ...
Page 69: ...User and Programming Manual XDS Series 69 Figure 8 3 Replaceable Fuse Locations ...