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© National Instruments Corporation A-1 NI 2590/2591 User Manual
A
Specifications
This appendix lists the specifications for the NI 2590/2591 switch module.
These specifications are typical at 25 °C unless otherwise noted.
NI 2590
Input Characteristics
Number of relays....................................3
Common-mode voltage
Channel to earth.............................. 24 VDC
Maximum switching voltage
AC................................................... 24 V
rms
DC...................................................24 VDC
Maximum switching capacity per channel
DC................................................... 1 A at 24 V
AC................................................... 1 A
rms
at 24 V
Maximum switching
power per channel..................................24 W
Contact on resistance (initial) ................100 mΩ max
Contact material..................................... Gold-clad silver
RF Performance Characteristics
Characteristic impedance (Z
0
)................50 Ω
Insertion loss at:
< 100 MHz......................................< 0.4 dB
< 500 MHz......................................< 0.9 dB
< 1.3 GHz........................................ < 1.5 dB