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USB-6525 User Guide and Specifications 10 ni.com
Input current ...........................................3.0 mA/channel max
Solid-State Relay Outputs
Number of output channels.....................8, ch-ch isolated
Relay type...............................................Normally open solid-state
relay (SSR)
Switching voltage ...................................60 VDC/30 Vrms max
Switching current (per channel)..............500 mA max, full operation
temperature range
Switching rate (90% duty cycle) ............5 operations per second
Relay open time......................................60 μs typ
Relay close time......................................1.2 ms typ
On resistance...........................................550 mΩ max
Off state leakage .....................................0.6 μA typ
Counter
Number of counters ................................1 (P1.7 can be configured
as a counter)
Resolution...............................................32 bits
Counter measurements ...........................Rising edge counting
Maximum input frequency .....................5 KHz
Minimum high pulse width.....................20 μs
Minimum low pulse width......................180 μs
Bus Interface
USB specification...................................USB 2.0 full-speed (12 Mb/s)
Level Min Max
Input low voltage –60 VDC 1 VDC
Input high voltage 3.2 VDC 60 VDC