Power Requirement - National Instruments 6527 User Manual

Appendix A Specifications

Power Requirement

1
With all relays carrying 120 mA and all inputs driven to 28 V, the total power dissipation can approach 20 W. The maximum
switching capacity in PCI and CompactPCI systems must be derated according to the ambient temperature and cooling
capacity of your system to prevent the device from overheating. (The PXI chassis has built-in fans to handle 25 W per slot.)
6527 User Manual
Max switching voltage
AC....................................................30 V
DC....................................................60 VDC
Max switching capacity ..........................120 mA
Common-mode isolation ........................60 VDC
On resistance...........................................35 Ω max; 25 Ω typ
Output capacitance .................................55 pF at 1 V
Off leakage current (max).......................200 nA
Relay set time (max)...............................3.0 ms
Relay reset time (max)............................3.0 ms
Power-on state ........................................Relays open
Overcurrent protection on outputs, typical at 25 °C, V
Current limit ....................................260 mA
Shutdown time.................................1 µs
Overcurrent duration (max).............1 s
+5 VDC (±5%) .......................................500 mA max
Power available at I/O connector............+4.5 to +5.25 VDC, fused at 1 A
30 V
(channel-to-channel and
channel-to-computer)
A-2
(42 V peak)
RMS
1
(42 V peak)
RMS
= 7 V
relay
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