16
4-1. Front panel
1. POWER
ON
／
OFF
The power switch of the PA-B series.
Set the switch to ON to turn on power. When power is turned
on, the PA-B series runs.
2. OUTPUT key and OUTPUT LED (red)
The output On/Off switch of the PA-B series.
Press the OUTPUT key to turn on the output (and the OUTPUT
LED goes on). The voltmeter and ammeter indicate the output
values at that time.
When the OUTPUT key is pressed while the OUTPUT LED is lit,
the OUTPUT LED goes out and the output is shut off.
NOTE 1: When the PA-B series is turned on, the OUTPUT LED
and output are always off.
NOTE 2: When the OUTPUT F/R selector switch on the front
panel is set to the R position, the OUTPUT key is
disconnected and the output is set to the Off condition.
If the PA-B series is turned on in this condition, the
output is turned off.
3. Digital voltmeter (3 1/2-digit LEDs, red)
This voltmeter displays the output voltage or the set voltage
(only when the V/I check key on the front panel is pressed).
4. Digital ammeter (3-digit LEDs, red)
This voltmeter displays the output current or the set current
(only when the V/I check key on the front panel is pressed).
5. CV LED (green)
The constant-voltage mode indicator LED.
It is lit when the PA-B series is in the constant-voltage mode.
6. CC
LED
（
red
）
The constant-current mode indicator LED.
It is lit when the PA-B series is in the constant-current mode.
