National Instruments 321906B-01 用户手册

Appendix A

Specifications for NI 2503

A-6

©

 National Instruments Corporation

Channel to Channel Crosstalk/Isolation
Differential

..............................................50 Ω

 termination

Maximum Operating Speed....................200 cycles/s

Relay Operate Time (@ 20

°

 C)..............3 ms typical, 5 ms max

Relay Release Time (@ 20

°

 C) ..............1.5 ms typical, 5 ms max

Expected Life

Mechanical (@ 180 cpm) ................5 

×

 10

7

 operations

Electrical at Maximum Load ...........2 

×

 10

6

 operations

Slave

Trigger Lines ..........................................8

Star Trigger.............................................1

+5 V

Typical.............................................370 mA

Maximum ........................................700 mA

10 KHz

< –100 dB

100 KHz

< –80 dB

1 MHz

< –55 dB

10 MHz

< –30 dB

35 MHz

< –25 dB