Specifications

140 Chapter 11

Shutting Down the Instrument

Shutdown Procedure

When you use a GPIB command to shut down the Agilent 4287A, the power is turned off

and the LED next to the standby switch goes off, but the standby switch remains in the ON

(depressed) position. To shut down the 4287A, use the following command:

• :SYST:POFF on page 306

Issuing this command to shut down the 4287A causes the standby switch to remain in the

ON (depressed) position. In this case, you can later turn on the power to the 4287A by one

of the following two methods:

• Release the standby switch to the OFF position and then depress it to the ON position.

• Turn off the power to the 4287A and then turn on the power again. For example, you

can disconnect the power cable from the rear panel and then reconnect it.

WARNING After issuing the command shown above, be sure to wait until the LED beside the

standby switch goes off to indicate that the 4287A is completely shut down. Do not

turn off the power to the 4287A (or, if the 4287A belongs to a handler system, the

power to that system) or disconnect the power cable from the rear panel while the

LED is lit.