Configure Operation

Advanced Tab

The Advanced tab for the Configure operation contains the following options:

• Sample Count —The number of measurements the DMM takes each time it receives a trigger. The value of this setting only affects instrument behavior when the Multi Point extension is enabled.
• Sample Interval (mS) —The interval between samples, in seconds. This setting affects instrument behavior only when Sample Count is greater than 1, Sample Trigger is set to Interval ST, and the Multi Point extension is enabled. If the Sample Interval value does not exactly match a value an instrument driver supports, the instrument driver will coerce up to the next supported value.
• Trigger Count —The number of triggers the DMM accepts before it returns to the idle state. The value of this setting affects instrument behavior only when the Multi Point extension is enabled.
• Sample Trigger —The trigger source for each sample. The Sample Trigger setting is typically used when handshaking with a switching system. For example, you can set up a switching system to go through a scan that a switch scan list specifies and set up the DMM to take a measurement at each channel specified in the scan list. You can connect the DMM VMC (voltmeter complete) signal to trigger input on the switching system. Also, you can set up the switching system so once it finishes a step in the scan, it sends out a pulse on the scanner advanced line, which can be hooked to the DMM sample trigger. If the value of the Sample Count is greater than 1, the DMM waits until a sample trigger occurs after taking a single measurement. When the sample trigger this setting specifies occurs, the DMM takes the next measurement. This setting only affects instrument behavior when Sample Count is greater than 1 and the Multi Point extension is enabled.

  Supported Value	Description
  Immediate (1)	Specifies that the DMM does not wait for a trigger before acquiring a sample.
  External (2)	Specifies that the DMM waits until a sample trigger occurs on the external trigger input and then acquires a sample.
  Software (3)	Specifies that the DMM waits for a sample trigger until the Send Software Trigger operation executes and then acquires a sample.
  TTL0 (111)	Specifies that the DMM waits until a sample trigger occurs on TTL0 and then acquires a sample.
  TTL1 (112)	Specifies that the DMM waits until a sample trigger occurs on TTL1 and then acquires a sample.
  TTL2 (113)	Specifies that the DMM waits until a sample trigger occurs on TTL2 and then acquires a sample.
  TTL3 (114)	Specifies that the DMM waits until a sample trigger occurs on TTL3 and then acquires a sample.
  TTL4 (115)	Specifies that the DMM waits until a sample trigger occurs on TTL4 and then acquires a sample.
  TTL5 (116)	Specifies that the DMM waits until a sample trigger occurs on TTL5 and then acquires a sample.
  TTL6 (117)	Specifies that the DMM waits until a sample trigger occurs on TTL6 and then acquires a sample.
  TTL7 (118)	Specifies that the DMM waits until a sample trigger occurs on TTL7 and then acquires a sample.
  ECL0 (119)	Specifies that the DMM waits until a sample trigger occurs on ECLO and then acquires a sample.
  ECL1 (120)	Specifies that the DMM waits until a sample trigger occurs on ECL1 and then acquires a sample.
  PXI Star (131	Specifies that the DMM waits until a sample trigger occurs on the PXI Star trigger bus and then acquires a sample.
  RTSI0 (140)	Specifies that the DMM waits until a sample trigger occurs on RTSI0 and then acquires a sample.
  RTSI1 (141)	Specifies that the DMM waits until a sample trigger occurs on RTSI1 and then acquires a sample.
  RTSI2 (142)	Specifies that the DMM waits until a sample trigger occurs on RTSI2 and then acquires a sample.
  RTSI3 (143)	Specifies that the DMM waits until a sample trigger occurs on RTSI3 and then acquires a sample.
  RTSI4 (144)	Specifies that the DMM waits until a sample trigger occurs on RTSI4 and then acquires a sample.
  RTSI5 (145)	Specifies that the DMM waits until a sample trigger occurs on RTSI5 and then acquires a sample.
  RTSI6 (146)	Specifies that the DMM waits until a sample trigger occurs on RTSI6 and then acquires a sample.
  Interval (10)	Specifies that the DMM waits for a sample trigger to occur for the amount of time Sample Interval specifies and then acquires a sample.

• Meas Complete Dest —The destination of the measurement complete signal. After each measurement, the DMM generates a measurement complete signal. This signal is sometimes referred to as Voltmeter Complete (VMC). The value of this setting only affects instrument behavior when the Multi Point extension is enabled.

  Supported Value	Description
  None (-1)	Does not route the measurement complete signal.
  External (2)	Routes the measurement complete signal to the external connector.
  TTL0 (111)	Routes the measurement complete signal to TTL0.
  TTL1 (112)	Routes the measurement complete signal to TTL1.
  TTL2 (113)	Routes the measurement complete signal to TTL2.
  TTL3 (114)	Routes the measurement complete signal to TTL3.
  TTL4 (115)	Routes the measurement complete signal to TTL4.
  TTL5 (116)	Routes the measurement complete signal to TTL5.
  TTL6 (117)	Routes the measurement complete signal to TTL6.
  TTL7 (118)	Routes the measurement complete signal to TTL7.
  ECL0 (119)	Routes the measurement complete signal to ECL0.
  ECL1 (120)	Routes the measurement complete signal to ECL 1.
  PXI Star (131)	Routes the measurement complete signal to PXI Star trigger bus.
  RTSI0 (140)	Routes the measurement complete signal to RTSI0.
  RTSI1 (141)	Routes the measurement complete signal to RTSI1.
  RTSI2 (142)	Routes the measurement complete signal to RTSI2.
  RTSI3 (143)	Routes the measurement complete signal to RTSI3.
  RTSI4 (144)	Routes the measurement complete signal to RTSI4.
  RTSI5 (145)	Routes the measurement complete signal to RTSI5.
  RTSI6 (146)	Routes the measurement complete signal to RTSI6.

• Voltage Range for Freq (Vrms) —The expected range of the amplitude of the input signal in Vrms for frequency and period measurements. If the Voltage Range For Freq setting does not exactly match a value an instrument driver supports, the instrument driver will coerce up to the next supported value. The value of this setting only affects instrument behavior when the Frequency Measurement extension and the Measurement Function setting are set to a frequency or period measurement.
• Auto Zero —The auto-zero mode. When you enable the Auto Zero setting, the DMM internally disconnects the input signal and takes a zero reading. The DMM then subtracts the zero reading from the measurement to prevent offset voltages present in the input circuitry of the instrument from affecting measurement accuracy. The value of this setting affects instrument behavior only when the Auto Zero extension is enabled.

  Supported Value	Description
  Auto Zero Off (0)	Disables the auto-zero feature.
  Auto Zero On (1)	Configures the DMM to take a zero reading for each measurement. The DMM subtracts the zero reading from the value it measures.
  Auto Zero Once (2)	Configures the DMM to take a zero reading immediately. The DMM then subtracts this zero reading from all subsequent values it measures.

• Powerline Freq —The power line frequency in hertz. Some devices require that the frequency of the power line to which they are connected is specified for accurate measurements. The value of this setting affects instrument behavior only when the Powerline Freq extension is enabled.
• Trigger Slope —The polarity of the external trigger slope. The DMM triggers on either the rising or the falling edge of the external trigger source depending on the value of the Trigger Slope setting. The value of this setting affects instrument behavior only when the Trigger Slope extension is enabled.

  Supported Value	Description
  Positive (0)	Sets the trigger event to occur on the rising edge of the trigger pulse.
  Negative (1)	Sets the trigger event to occur on the falling edge of the trigger pulse.