Differential Measurements; Period Averaging; Voltage And Current Excitation; Switched Voltage Output - Campbell GRANITE VOLT Series Product Manual

in blue. The VOLT 108 has 16 SE terminals, and the VOLT 116 has 32. For example, single-ended
channel 1 is comprised of terminals 1 and ⏚.

7.1.1.2 Differential measurements

A differential measurement measures the difference in voltage between two input terminals. Use
a differential measurement to measure current by using external resistors to convert current to
voltage. The VOLT 108 has 8 H/L differential terminals, and the VOLT 116 has 16.

7.1.1.3 Period averaging

Single-ended terminals on the VOLT 100 series are also configurable for measuring the period of
an analog signal.
Voltage gain: 1, 3.8, 19, 67
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Maximum frequency: 200 kHz
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Resolution: 130 ns ÷ number of cycles to be measured
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7.1.2 Voltage and current excitation

X terminals supply switched voltage or current to sensors. The VOLT 108 has two X terminals, and
the VOLT 116 has four.
Voltage Excitation (switched-analog output) – X terminals, configured for voltage
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excitation output, supply precise voltage in the range of ±5000 mV. These terminals are
regularly used with resistive-bridge measurements. Each terminal will source up to ±50 mA.
Current Excitation (switched-analog output) – X terminals, configured for current excitation
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output, supply precise current in the range of ±2.5 mA. These terminals are regularly used
with resistive-bridge measurements.

7.1.3 Switched voltage output

SW5V and SW12V terminals supply voltage and control for sensors. The VOLT 108 includes two
SW5V and one SW12V terminals. The VOLT 116 includes four SW5V and two SW12V terminals.
5 V control – SW5V terminals supply 5000 mV. See
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on voltage and current sourcing limits.
Switched 12 V – SW12V terminals supply 12 V and will source up to 200 mA each.
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Switched 5 VDC (p. 20) for information
VOLT 100 series 12