Specifications

D1500 Data Sheet D-7
Calibration Example:
We wish to calibrate a D1511 module. This unit contains 5V excitation and
a ±30mV input.
Step 1 is straightforward and needs no further explanation.
Step 2: set the voltage source to 0 volts. Trim zero:
Command: $1WE
Response: *
Command: $1TZ+00000.00
Response: *
Step 3: measure the excitation voltage with the DVM. In this example the
measured voltage is 4.954V Calculate the “compensation factor”:
CF = 4.954 / 5 = 0.9908
Step 4: calculate the calibration voltage:
V = +50mV X 0.9908 = +49.54mV.
Set the voltage standard to +49.54mV.
Step 5: perform the Trim Span command:
Command: $1WE
Response: *
Command: $1TS+00050.00
Response: *
Step 6: verify the calibration, continuing to apply +49.54mV to the input:
Command: $1RD
Response: *+00050.00
The span trim is now complete. The Trim Zero (TZ) command may be used
to trim sensor offsets without affecting the span trim.
Options
All D1500 units come standard with a Digital Output /Low Alarm output. This
connector pin may be factory configured for a Digital Input /Event Counter
input. Consult factory.
Continuous Output
Any of the D1000 sensor input modules may be factory configured to provide
continuous output data without interrogation from the host. This option is
ideal for use with LED display panels to provide a continuous visual output.