Tektronix Keithley 2268 Series, Справочное руководство

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Remote Operation Series 2268 850 Watt DC Power Supplies Reference Manual
154 2268S-901-01 Rev. A / January 2015
LOCKING AND UNLOCKING THE FRONT PANEL
Locking out the front panel will prevent any of the buttons from functioning. All the buttons
and knobs on the front panel will display the LOCL
L
OC
message to be display on the
Current and Voltage displays if pressed or rotated. This mode prevents any changes to the
unit from the front panel. See the following procedure to lock and unlock the front panel.
The SCPI Commands for these instructions are:
[:]SYSTem[<channel>]:REMote:STATe {?|LOCal|REMote}
Where:
LOCal is used to set the front panel mode to local.
REMote is used to set the front panel into locked mode (remote).
For example:
SYST:REM:STAT REM
Front panel is locked (remote digital programming mode only).
SYST:REM:STAT LOC
Front panel is unlocked.
SYST:REM:STAT ? Query for status
AUTO SEQUENCE PROGRAMMING
Auto Sequence programming lets you execute a program stored in the power supply's
memory. The program that can be stored in memory can be composed of any of the SCPI
commands described in this Manual.
For example, Auto Sequence programming allows you to set the timer to turn the power
output of the supply Off or On after a time interval or to program voltage sequences.
When a program is activated each command stored in the buffer is executed as if the operator
had sent the command by typing it in. A variable delay time called dwell is spent between
commands. The dwell time can range from 0 seconds to 180 seconds. See “Setting Dwell
Time” on page 155.
The Auto Sequence program will be cleared after AC power is turned off; however, a
procedure exists for storing it in a text file which can be reloaded at a later date.