Operation and Features
2
Disabling the Output
E3632A User’s Guide
45
Disconnecting the output using an external relay
When the output of the E3632A is turned off, it is
implemented by setting the output to 0 V and 0.02 A. This
gives a zero output voltage without actually disconnecting
the output. To disconnect the output an external relay must
be connected between the output and the load. A TTL signal
of either low true or high true is provided to control an
external relay. This signal can only be controlled with the
remote command
OUTPut:RELay {OFF|ON}
. The TTL
output is available on the RS- 232 connection pin 1 and
pin 9.
When the
OUTPut:RELay
state is ON, the TTL output of pin
1 is high (4.5 V) and pin 9 is low (0.5 V). The levels are
reversed when the
OUTPut:RELay
state is OFF.
Knob locking
The knob locking function can be used to disable the knob,
thereby preventing any unwanted changes during an
experiment, or when you leave the power supply unattended.
To disable the knob, press the resolution selection key until
the blinking digit disappears.
Notice that the knob and front panel keys are disabled when
in the remote interface mode.
N O T E
•
TTL output of pin 1 or pin 9 of the RS-232 connector is available only
after installing two jumpers inside the power supply. Refer to the
Service Guide (E3632-90010)
for more information.
•
Do not use the RS-232 interface if you have configured the power
supply to output relay control signals. Internal components on the
RS-232 circuitry may be damaged.
Summary of Contents for E3632A
Page 1: ...Keysight E3632A DC Power Supply User s Guide ...
Page 2: ......
Page 3: ......
Page 12: ...X E3632A User s Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...
Page 20: ...XVIII E3632A User s Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...
Page 22: ...XX E3632A User s Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...
