How to measure width of digital pulse using SMU-6548

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  I have the desire to have an external synchronization signal (too short a duration) detected by a jury of 6062E and output a pulse of longer duration as a timing signal that I would read on an analog channel as well as other sensors on other analog channels. I used the example program 2055.zip, STCgeneratesinglepulse, for LW/CVI as a starting point. I modified the sample program so that it is redeclenchables instead of just pulse. This code example uses GPCTR0. The program works but not as I expected. GPCTR0_OUT has the pulse output generated and programmable duration that I want. GPCTR0_GATE is the input trigger/sync signal. What I've found, is that the DOOR has a constant voltage of + 5V signal. The problem is that the only trigger that works is an intermittent grounding to the GPCTR0_GATE. I was keen to work with external synchronization signal (short signal down-up-down). I was using the DAQ card + PIN 5V power to mimic an external trigger. How can I use such a trigger signal to generate the impulse? I have included a stripped to the low, short version of the revised program sample below and also as an attachment.

  #include "nidaqex.h".
  /*********************************************************************
  * Sample program: based on 2055.zip
  * STCgenerateSingleTriggeredPulse.c //changed to redeclenchables
  *
  * Description:
  * Generates a redeclenchables digital pulse 1ms LOW and 100 ms HIGH aid
  * General counter 0 after tripping (for devices with the)
  * Acquisition of data-STC counters/timers)
  *
  * Pins of connection information:
  * Your digital output pulse will be on the GPCTR0_OUT pin (2 for 6062).
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  * Connect your trigger pulse for digital on PFI9/GPCTR0_GATE spindle (3 of 6062).
  * Plug the Locator on the ground at the 'digital ground' PIN (4 / 18 of 6062).
  *
  * To trigger, connected to pin 3 on the ground. But this isn't what I want.
  * Want relaxation to be a HIGH LEVEL of BASS. How?
  *
  * The presence or absence of next line had no effect.
  * Secret = GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_GATE_POLARITY, ND_NEGATIVE);
  *
  *********************************************************************
  * Used a second computer/data acquisition monitoring system.
  Monitoring system connected to the DAQ computer
  * ----------------------------------------------          -----------------------
  * ACH0 (68) GPCTR0_OUT (2)
  * Rider to DGND AIGND (67) (4) ACH8 (34)
  *
  * OR
  *
  * Use the counter on the second computer/data acquisition monitoring system.
  Monitoring system connected to the DAQ computer
  * --------------------------------              -----------------------
  * GPCTR0_OUT PFI9/GPCTR0_GATE (3) (2)
  * GND                                              GND
  *
  *********************************************************************/

  void main (void)
  {
  char c; for the test
  I16 Secret = 0;
  I16 iRetVal = 0;
  I16 iDevice = 1;
  ulGpctrNum u32 = ND_COUNTER_0;
  u32 ulLOWcount = 100;  1ms
  u32 ulHIGHcount = 10000; 100ms
  u32 ulLOWcount = 2;   0.02ms
  u32 ulHIGHcount = 10;  varied 0.1ms for testing
      
  Secret = GPCTR_Control (iDevice, ulGpctrNum, ND_RESET);
  Secret = GPCTR_Set_Application (iDevice, ulGpctrNum, ND_RETRIG_PULSE_GNR);
  Secret = GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_SOURCE, ND_INTERNAL_100_KHZ);
  Secret = GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_GATE_POLARITY, ND_NEGATIVE);
  Secret = GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_GATE, ND_PFI_9);  Gate, apply trigger here
  Secret = GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_COUNT_1, ulLOWcount);
  Secret = GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_COUNT_2, ulHIGHcount);
  / * To print a counter pulse, you must call Select_Signal. */
  Secret = Select_Signal (iDevice, ND_GPCTR0_OUTPUT, ND_GPCTR0_OUTPUT, ND_LOW_TO_HIGH);
  Secret = GPCTR_Control (iDevice, ulGpctrNum, ND_PROGRAM);
  printf ("apply your trigger pulse to PFI9 now. \nThe rising edge is armed and the second falling edge is in the value. \n") ;
  c = GetChar (); This simulates normal DAQ.
  Secret = GPCTR_Control (iDevice, ulGpctrNum, ND_RESET);
  / * Note that the following call to Select_Signal causes the
  output high impedance that will probably bring the logic
  HIGH level, if there is a pull-up on this PIN resistance. (Check your)
  Manual of equipment.)  If you do not want this behavior, comment
  the next line. */
  Secret = Select_Signal (iDevice, ND_GPCTR0_OUTPUT, ND_NONE, ND_DONT_CARE);
  return;
  }

  S_Hong,

  I solved my problem.

  I had in my code

  iStatus is GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_GATE, ND_PFI_9);.

  and was my trigger for entry. This is false because PFI_9 is an echo out of everything my trigger is connected to.

  I changed the statement to

  iStatus is GPCTR_Change_Parameter (iDevice, ulGpctrNum, ND_GATE, ND_PFI_0);.    for the source of the signal.

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  2-3	1751	1	1751hz
  3-4	2663	0	2663hz
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  5-6	1017	1	1017hz
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  7-8	10 p	0	302hz
  8-9	1513	1	1513hz
  9-10	570	1	570hz

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