AppendixA Specifications
6527User Manual A-2 ni.com
Maxswitching voltage
AC....................................................30VRMS (42 V peak)
DC....................................................60VDC
Maxswitching capacity ..........................120 mA1
Common-modeisolation ........................60 VDC
30 VRMS (42 V peak)
(channel-to-channel and
channel-to-computer)
Onresistance ...........................................35Ωmax; 25 Ωtyp
Outputcapacitance .................................55pF at 1 V
Offleakage current(max) .......................200nA
Relayset time (max)...............................3.0 ms
Relayr esettime (max) ............................3.0 ms
Power-onstate ........................................Relays open
Overcurrentp rotection on outputs, typical at 25°C, Vrelay =7V
Currentl imit ....................................260mA
Shutdowntime .................................1 µs
Overcurrentd uration (max).............1 s
Power Requirement+5VDC (±5%).......................................500 mA max
Power available at I/O connector............+4.5 to +5.25 VDC, fused at 1 A
1Withall relays carrying 120 mA and all inputs driven to 28 V,the total power dissipation can approach 20 W. The maximum
switchingcapacity in PCI and CompactPCI systems must be derated according to the ambient temperature and cooling
capacityof your system to prevent the device from overheating. (The PXI chassis has built-in fans to handle 25 W per slot.)