Here is how to test to see if it is working correctly:
1. Configure and calibrate the indicator to your load device. Ensure the weighing func-
tion is working properly.
2. Connect the AA and BB output wires to an external 24 VDC power supply and 250
Ω
resistor as shown in the above test diagram.
3. When the indicator is displaying zero, the output should be 4 mA. Since V=IR, you
should measure 1 VDC across R
L
.
4. When the indicator is displaying the full-scale load, the output should be 20 mA.
Again, since V=IR, you should measure 5 VDC across R
L
.
Here is how you fine-tune the output using F23:
1. Enter the Setup Menu and scroll to F23. For directions on entering the Setup Menu,
see Chapter 3 of the manual.
2. Push the down (ZERO) key once. The indicator outputs 4 mA and displays a num-
ber.
3. While monitoring the voltage across R
L
, use the right (PRINT) or left (TARE) keys to
change the displayed value until the measured voltage is exactly 1 VDC.
4. Press the SET (Net/Gross) key to save. The indicator outputs 20 mA and displays
another number.
5. While monitoring the voltage across R
L
, use the right (PRINT) or left (TARE) keys to
change the displayed value until the measured voltage is exactly 5 VDC.
6. Press the SET (Net/Gross) key to save and revert back to F23.
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