KEPCO ABC-DM SERIES - Manual (Page 37)

ABC 040104
3-5
Depressing any key on the keypad during the power up sequence will cause the power supply
to enter the keypad test. To return to normal operation, follow the prompts, depressing keypad
keys as indicated on the LCD.
3.3.3 SETTING LOCAL MODE
When the power supply is turned on, it is automatically set to Local mode. If remote commands
are accepted over the GPIB bus, the power supply will automatically go into Remote mode (
Rem
at the upper left of the LCD). Pressing the LOCAL key will restore Local mode. When in Remote
mode, all keys except LOCAL are disabled.
The ABC incorporates a “keypad lockout” command which allows the LOCAL key to be dis-
abled during remote operation, preventing inadvertent setting of the power supply to Local
mode. When the keypad is locked, the LCD displays
Rwl
in place of
LOC
. If the keypad is
locked, it must be unlocked either by a remote command (see Appendix B, PAR. B.91), or
cycling the power supply off then on.
3.3.4 ADJUSTING LCD CONTRAST
With the power supply in command entry status , press MENU key until LCD displays
CON-
TRAST
. Press or key to increase or decrease contrast for optimum viewing. The contrast
can also be set directly by entering a number from 1 to 9. Press ENTER or CLEAR to exit
menu.
3.3.5 ENABLING/DISABLING AUDIBLE BEEPS
With the power supply in command entry status , press MENU until LCD displays
SPEAKER
.
The top line indicates if the speaker is on or off (the factory default setting is speaker on). Enter
1 to enable the speaker, or 0 to disable the speaker. Press ENTER or CLEAR to exit menu.
3.3.6 ENABLING/DISABLING DC OUTPUT POWER
When the power supply is turned on, the output is automatically enabled, and the bottom line of
the LCD gives voltage and current measurements at the output. To disable the output, press the
red OUTPUT ON/OFF key; the lower line of the LCD reads:
Output OFF
. When the output is
disabled, voltage and current are programmed to zero; the power supply remains in Command
Entry status. Pressing the OUTPUT ON/OFF key again enables the output: the previously pro-
grammed values of voltage and current are restored and the LCD displays the mode (CV or CC)
and actual values of output voltage and current.
3.3.6.1 POWER UP DIGITAL DC OUTPUT CONTROL
The output of the power supply can be programmed to be either enabled or disabled upon
power-up. With the power supply in command entry status
(:_:_:)
, press the MENU key until
LCD displays
Dig Off @Pwr-Up
. The top line indicates whether the Digital DC Output will be
on (enabled) or off (disabled) upon power-up. Press 1 to enable the Digital DC Output upon
power up. This sets the output to zero volt and current to the Power-up value. Press 0 to disable
the output upon power up. Press CLEAR or RESET to exit menu and return to command entry
status.
3.3.7 RESET
RESET overrides all other local commands to reset the power supply to the power on defaults:
output enabled, voltage mode, output voltage set to zero, output current set to a minimum value