Agilent Technologies E3632A manual To Disconnect the Output Using an External Relay

Chapter 5 Service

To Disconnect the Output Using an External Relay

To Disconnect the Output Using an External Relay

When the output of the E3632A is turned off, it is implemented by setting the output to 0 volts and 0.02 amps. 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 {OFFON}. 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".

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. See below for more
	information.

N o t e	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.

Installation Procedure

The assembly drawings and schematics are located in chapter 8, "Schematics".

1Remove the front and rear bumpers and take off the cover (See the mechanical disassembly drawing on page 119).

2Install JP3 and JP4 located adjacent to the connector P5 (The JP3 and JP4 are outlined with a circle in the component locator diagram on page 120). A bare wire may be used.

3Reassemble the power supply.

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