Keysight E3633A - Page 124

4 Remote Interface Reference
124 Keysight E3633A and E3634A User’s Guide
OUTPut:RELay {OFF|ON}
This command sets the state of two TTL signals on the RS-232 connector.
These signals are intended for use with an external relay and relay driver. The
TTL output is available on the RS-232 connector 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”. At
*RST , the OUTPut:RELay state is OFF.
OUTPut:RELay?
This command returns the state of the TTL relay logic signals. See also
OUTP:REL command.
SYSTem:BEEPer
This command issues a single beep immediately.
NOTE
TTL output of pin 1 or pin 9 of the RS-232 connector is available only after
installing two jumpers inside the power supply. See the Service Guide for more
information.
NOTE
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.