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3 Features and Functions
DAQM907A Multifunction Module
This module combines two 8-bit ports of digital input/output, a 100 kHz totalizer, and two ±12 V analog outputs
(DAC). For greater flexibility, you can read digital inputs and the totalizer count during a scan. Use this module to
sense status and control external devices such as solenoids, power relays, and microwave switches.
The DIO consists of two 8-bit ports with TTL-compatible inputs and output. The open-drain outputs can sink up to
400 mA. From the front panel, you can read data from only one 8-bit input port at a time. From the remote interface,
you can read both ports simultaneously as a 16- bit word only if neither port is in the scan list.
Totalizer input
The 26-bit totalizer can count pulses at a 100 kHz rate. You can configure the totalizer to count on the rising edge or
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falling edge of the input signal. A TTL high signal applied to the
terminal enables counting and a low signal
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disables counting. A TTL-compatible low signal applied to the
terminal enables counting and a high signal
disables counting. The totalizer only counts when both terminals are enabled. Move the Totalize Threshold jumper to
the "AC" position to detect changes through 0 V. Move the jumper to the "TTL" position (factory setting) to detect
changes through TTL threshold levels.
Keysight DAQ970A/DAQ973A User's Guide
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