AppendixA Specificationsfor NI 2591
NI2590/2591 User Man ual A-4 ni.com
NI 2591Input Characteristics
Numberof relays ....................................3
Common-mode voltage
Channelto earth ...............................30Vrms or DC
Maximum switching voltage
AC....................................................30Vrms
DC....................................................30VDC
Maximum switching capacity per channel
DC....................................................30VDC at 0.33 ADC
AC....................................................30Vrms at 0.33 Arms
Maximum switching
powerper channel ...................................10W
Contact on resistance (initial).................200 mΩmax
Contactmaterial ......................................Gold
RF Performance Characteristics
Characteristicimpedance (Z0) ................50 Ω
Insertion loss at:
<2.5 GHz ........................................< 0.6 dB
<4 GHz ...........................................< 0.9 dB
VSWR at:
<2.5 GHz........................................< 1.3
<4 GHz...........................................< 1.5
Isolation:
<2.5 GHz........................................< –60 dB
<4 GHz...........................................< –55 dB
Maximum RF carry power
at900 MHz .............................................10 W