
Appendix A Specifications
BNC-2140 User Manual A-2
©
National Instruments Corporation
Temperature coefficient..........................±141 ppm/° C
Voltage compliance................................24 V
Excitation overvoltage protection...........±42.4 V (30 Vrms) powered on or
off
Analog OutputNumber of channels................................2, see Caution under Analog
Output Signal Connections, in
Chapter3, Signal Con nections
Output coupling......................................DC
Power Requirement (from DSA board)Power consumption................................400 mA at +5 VDC
PhysicalDimensions.............................................14.0 by 11.2 by 3.8 cm
(6.0 by 4.4 by 1.6 in.)
I/O connectors
I/O Signals.......................................6 BNC connectors (outer shell
isolated from box metal)
DSA board connection....................68-pin 0.8 mm VHDCI female
connector
EnvironmentOperating temperature............................0° to 40° C
Storage temperature................................–55° to 150° C
Relative humidity...................................5% to 90% non-condensing
UM.book Page 2 Tuesday, July 14, 1998 10:37 AM