32Ch Isolated Output Card

Isolated digital input interface for SLSC

The SET-1320 device is an isolated digital output interface for NI-SLSC.

This card provides 32 optically isolated open-collector outputs that can switch up to 100 mA at 60 V DC. SET-1320 combines high-density IO with high isolation voltages and a wide output voltage range. It allows to break ground loops and protect susceptible test equipment from DUTs. It also enables to interface standard logic-level test equipment with almost any system voltage. The SET-1320 can be driven through the RTI or through the SLSC chassis via software. RTI inputs are compatible with LVTTL and TTL logic levels.

The SET-1320 has 32 optically isolated open-collector outputs. Current can flow from CH+ to CH- when the output is on. The outputs are reverse polarity protected to -60 V DC. The outputs are controlled from a logic-level digital output source, like NI R-Series FPGA or NI C-Series digital output modules, through the RTI.


  • Galvanic channel to channel and rack isolation
  • Large input voltage range – 0 to 60V
  • 32 optically isolated digital inputs
  • Isolation voltage:
    • 70 VRMS
    • 100 VDC
  • Wide input voltage range
  • Input current limited to 6mA over entire input voltage range
  • Input reverse protection up to -60V

Absolute Maximum Ratings

Condition Value Comment
Max. Output Channel Voltage Measured between CH+ and CH- 60 V DC
Max. Channel Reverse Voltage Measured between CH+ and CH- -60 V DC
Channel to Channel 120 V DC If pins are not adjacent to each other.
Otherwise 60 V DC.
Channels to Chassis 60 V DC

Technical Data Front Interface

Condition Value Comment
Max Output Switching Frequency 1 kΩ Pull up @ 5 V DC 50 kHz Depending on Pull up Current
Max. Current 100 mA Peak: 500 mA
Max. Output Forward Voltage I = 100 mA < 1.3 V DC

Technical Data Rear Interface

Condition Value
Max. Input Channel Voltage Relative to DGND 5.5 V


Condition Value
Operating Humidity Relative,
10% to 90%
Storage Humidity Relative,
non condensing
5% to 95%
Module Operating Temperature Forced-air cooling from chassis 0 °C to 75 °C
Storage Temperature -40 °C to 85 °C
Maximum Altitude 2000 m


Manual SLSC-1320 32Ch Isolated Output Card
Manual SET-1320 (pdf, 778KB)


  • 32 isolated inputs
  • Enables DUT characterization required in parametric testing
  • Isolation of computer from field devices
  • Breaking ground loops
  • High sensitivity current digital input


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