7½ Digit Graphical Sampling Multimeter Reference Manual Section 3:
DMM7510-901-01 Rev. B / May 2015 3-55
Input characteristics:
• The falling edge is detected as the external drive pulses the line low, and the internal drive
latches the line low.
Figure 125: Synchronous acceptor input trigger
Output characteristics:
• In addition to trigger events from other trigger objects, the TSP commands
trigger.digout[N].assert() and trigger.tsplinkout[N].assert()
• The physical line state does not change until all drives (internal and external) release the line.
• Action overruns occur if the internal drive is not latched low and a source event is received.
Figure 126: Synchronous acceptor output trigger
Remote digital I/O commands
Commands for both SCPI and TSP are summarized in the following table. You can use the digital I/O
port to do the following actions:
• Perform basic steady-state digital I/O operations, such as reading and writing to individual I/O
lines or reading and writing to the entire port
• Trigger the Model DMM7510 when external trigger pulses are applied to the digital I/O port
• Provide trigger pulses to external devices
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