Martel Electronics BetaGauge 321A - Manual (Page 14)

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checked against the configurations of the other currently active displays, if the
configurations are in conflict the recalled display’s configuration is modified to avoid the
conflict. If all three displays are deactivated the LOWER display will come on
automatically
2.4.6 Low resolution function.
Due to the high accuracy of the 311A/321A the measured values are displayed with many
digits, this might be an disadvantage in some cases, therefore the 311A/321A has a low
resolution function. The function takes away the last digit.
To turn the function on or off, proceed as follows:
1. With the calibrator turned on and operating press the F3 key to activate the MORE
menu option. Press the NEXT button until RESOLUTION appears in the left text field.
Now press the F1 key to enter the function.
2. The select ON or OFF to turn the low resolution function on or off.
3. Pressing DONE returns to main menu.
2.4.7 Switching HART resistor on or off.
The calibrator has a built in 250 ohms serial "HART" resistor, to prevent communication
errors on live HART networks, while calibrating 4-20 mA output from pressure
transmitters. The resistor is switched into the loop, as a serial resistor.
To change switch in or out the HART resistor proceed as follows:
1. With the calibrator turned on and operating press the F3 key to activate the MORE
menu option. Press the NEXT button until HART appears in the left text field. Now
press the F1 key to enter the setup.
2. Switches the resistor on or off.
3. DONE returns to main menu.