Controlling the output relay – HP E1418A User Manual

Page 54

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Controlling the Output Relay

There are three programming methods to enable the output of a channel
(close the output relay).

The

APPLy

n

:VOLTage <

value

>

or

APPLy

n

:CURRent <

value

>

command both program an output value and close the output relay
on a single channel.

The

OUTPut

n

:STATe ON

command closes the output relay for a

single channel. The last programmed mode and output value remains
in effect.

The

DIAGnostic:OUTPut:ALL:STATe ON

command closes all output

relays. The order of relay closure is not guaranteed.

There are three programming methods to disable the output of a channel
(open the output relay).

Send the

OUTPut

n

:STATe OFF

command to open a single channel

output relay without changing the programmed mode or output value
for that channel or affecting any other channels.

Send

*RST

to program all channels to voltage mode, 0 volts output,

and open all output relays.

*RST

will not change the output mode if

the P/J jumper is set to Jumper Selectable.

Send the

DIAGnostic:OUTPut:ALL OFF

command to open all output

relays without changing the programmed mode or output value.

The output relay will also be opened and then closed by a change of output
mode using the

APPLy

commands.

An

APPLy

n

:VOLTage <

value

>

followed by an

APPLy

n

:CURRent <

value

>

command (or vice versa) will open and

then close the output relay.

All output relays will be opened, and left open, by the following commands.

The

SOURce

n

:FUNCtion:MODE VOLTage

or

SOURce

n

:FUNCtion:MODE CURRent

commands set output mode

for a single channel and opens the output relay for that channel.
Other channels are not affected.

The

*RST

command performs a reset and leaves the output relays

open on all channels (the command also programs all channels to
voltage mode, 0 volts output unless the P/J jumper is set to Jumper
Selectable).

The

*TST?

command performs a self-test and leaves the output

relays open on all channels. Programmed output modes are restored
following the self-test.

Chapter 2

Programming Examples 53

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