Agilent Technologies E4351B Water Heater User Manual


 
Front Panel Operation 43
Table 5-1. Front Panel Controls and Indicators (continued)
÷ Function Keys
Press to enable or disable the Agilent SAS output. This key toggles between the two states. The disabled
state programs the output to the *RST voltage and current settings.
Note To prevent current overshoots, do not use the Output On Off key when operating in CC mode.
Current overshoots may occur when the output turns on because the unit momentarily goes to
constant voltage mode before switching back to constant current mode. As an alternative,
program the current to zero instead of using the
key.
Press to display the output voltage setting. After pressing , you may use the ENTRY keys to
change the value. (Applies in Fixed mode only)
Press to display the output current setting. After pressing , you may use the ENTRY keys to
change the value. (Applies in Fixed mode only)
Press to display the OV trip voltage setting. After pressing , you may use the ENTRY keys to change
the value.
When the Prot annunciator is on, press to see which protection circuit caused the Agilent SAS
to shut down. Response can be OC (overcurrent protection), OT (overtemperature), OV OC (hardware
overcurrent), or OV (overvoltage). If no protection circuit has tripped, the display shows dashes (- - - -).
Press this key to reset the protection circuit. If the condition that caused the circuit to trip has been
removed, the Prot annunciator will go off. (Select by pressing
.)
Press to enable or disable the Fixed mode OCP function. This key toggles between the two states. which
are indicated by the OCP annunciator. (Applies in Fixed mode only)
û ENTRY Keys
Press to increment the output voltage in the CV mode, or to increase the voltage setting after you have
pressed the
key.
Press and hold this key for an increasingly rapid change. (Fixed mode only)
Press to decrement the output voltage in the CV mode, or to decrease the voltage setting after you have
pressed the
key. Press and hold this key for an increasingly rapid change. (Fixed mode only)
Press to increment the output current in the CC mode, or to increase the current setting after you have
pressed the
key. Press and hold this key for an increasingly rapid change. (Fixed mode only)
Press to decrement the output current in the CC mode, or to decrease the current setting after you have
pressed the
key. Press and hold this key for an increasingly rapid change. (Fixed mode only)
-
Press to select numerical values .
Press to enter a minus sign.
Press to delete the last keypad entry. Use this key to remove incorrect digits before they are entered.
Press to delete an entire keypad entry and return to the meter mode. Use this key to exit from a value
before it is entered. (Select by pressing
.)
Press to enter a value or to accept an existing value and return the display to the meter mode.
The remaining shifted keys are for calibration (see appendix B - Calibration).