User Manual
21 
Chassis ground 
1.5  Optional Accessories 
The following lists all optional accessories supported by the 
917xB/918xB series power supplies. 
Interface Card Options 
Model 
Description 
DRGL 
GPIB/LAN interface card 
DR1DIO 
Single channel digital I/O and analog control card 
DR2DIO 
Dual channel digital I/O and analog control card 
DRRS485 
RS485 interface card 
DRRS232 
RS232 interface card 
Rack mount Options 
Rackmount kits are available for all 9 models. Refer to the following 
to determine your power supply rack mount size. 
2U size: Models 9171B, 9172B, 9181B 
3U size: Models 9173B, 9174B, 9182B, 9183B, 9184B, 9185B 
Model 
Description 
DRRM2U1 
Rackmount kit for single 2U power supply 
DRRM2U2 
Rackmount kit for two 2U power supplies mounted 
side by side 
DRRM3U1 
Rackmount kit for single 3U power supply 
DRRM3U2 
Rackmount kit for two l 3U power supplies mounted 
side by side 
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