Section 2: General operation
Model 2657A High Power System SourceMeter® Instrument Reference Manual
2-8
2657A-901-01 Rev. B/December 2012
Operating the instrument on an incorrect line voltage may cause damage to the instrument, possibly
voiding the warranty.
To turn a Model 2657A on and off:
1. Before plugging in the power cord, make sure that the front panel POWER switch is in the off (O)
position.
2. Connect the Model 2657A redundant protective earth (safety ground) located on the
(on page 2-5).
3. Connect the female end of the supplied power cord to the AC receptacle on the rear panel.
The power cord supplied with the Model 2657A contains a separate protective earth (safety ground)
wire for use with grounded outlets. When proper connections are made, the instrument chassis is
connected to power-line ground through the ground wire in the power cord. In addition, a
redundant protective earth connection is provided through a screw on the rear panel. In the event
of a failure, not using a properly grounded protective earth or grounded outlet may result in
personal injury or death due to electric shock.
4. Connect the other end of the power cord to a grounded AC outlet.
5. To turn your instrument on, press the front panel
POWER
switch to place it in the on (I) position.
6. To turn your instrument off, press the front panel
POWER
switch to place it in the off (O) position.
Placing a Model 2657A in standby
Placing the Model 2657A in standby does not place the instrument in a safe state (an
interlock
(on
page 3-84) is provided for this function).
When the instrument is on, the output may be placed in an active output state (output on) or a
standby mode (output off). From the front panel, pressing the
OUTPUT ON/OFF
control (see
(on page 2-4)) toggles the output using the present instrument configuration. You can
also place the output in standby over the remote interface by sending the following command:
smua.source.output = 0
Even though the instrument is placed in standby, the output may not be actually off.
Warmup period
The Model 2657A must be turned on and allowed to warm up for at least two hours to achieve rated
accuracies.
CAUTION
WARNING
WARNING
Summary of Contents for 2657A
Page 3: ......