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Specify analog input device bridge mode


Use this property in the session-based interface to specify the bridge mode, which represents the active gauge of the analog input channel.

The bridge mode is 'Unknown' when you add a bridge channel to the session. Change this value to a valid mode to use the channel. Valid bridge modes are:

  • 'Full' — All four gauges are active.

  • 'Half'— Only two bridges are active.

  • 'Quarter'— Only one bridge is active.


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Set the BridgeMode property of an analog input Bridge measurement type channel.

Create a session and add an analog input Bridge channel.

s = daq.createSession('ni');
ch = addAnalogInputChannel(s,'cDAQ1Mod7', 0, 'Bridge');

Set the BridgeMode property to 'Full' and view the channel properties.

ch.BridgeMode = 'Full'
ch = 

Data acquisition analog input channel 'ai0' on device 'cDAQ1Mod7':

             BridgeMode: Full
       ExcitationSource: Internal
      ExcitationVoltage: 2.5
NominalBridgeResistance: 'Unknown'
                  Range: -0.063 to +0.063 VoltsPerVolt
                   Name: ''
                     ID: 'ai0'
                 Device: [1x1]
        MeasurementType: 'Bridge'
          ADCTimingMode: HighResolution