ADLINK PXI-7901 - Manual (Page 7)

Introduction • 1
1
Introduction
ADLINK PXI-7901 is a general-purpose (GP) switch module implementing 16-
CH independent single-pole double-throw (SPDT) relays (1 Form C). PXI-7901
can connect one input to one output, and be used as signal switching or routing
for measurement systems as well as ATE.
Relays of PXI-7901 can be updated by either direct-update mode or auto-scan
mode. The latter mode supports scanlist of 1k-sample for deterministic
scanning.
PXI trigger functions are fully supported and software programmable. The
multiple switch modules can be synchronized and triggered without additional
field wiring.
For safety critical applications, PXI-7901 module can switch to the preset state
by either asserting emergency shutdown manually, or watchdog timer overflow
event.
1.1 Features
• PXI specifications Rev. 2.0 compliant
• 3U Eurocard form factor, CompactPCI compliant (PICMG 2.0 R3.0)
• PICMG 2.1 R2.0 CompactPCI Hot-Swap specifications compliant
• 16-CH SPDT (1 Form C) non-latching relays
• Contact rating
• 3A switching, 3A carrying
• 220V
DC
, 250V
AC
• 125 operations per second
• 1k-sample scanlist for deterministic scanning
• Provides handshaking signals to trigger external instruments
• Programmable emergency shutdown function and Watchdog timer for
safety critical applications
• Eight auxiliary 3.3 V/TTL digital inputs/outputs with 5V tolerance
• Supports PXI backplane triggers to synchronize multiple modules
• Fully software programmable