Keithley 2657A, Reference Manual, Page: 190 / 805

Section 3: Functions and features Model 2657A High Power System SourceMeter® Instrument Reference Manual
3-76 2657A-901-01 Rev. B/December 2012
Bit identification for indicators
Bit B16 B15 B14 B13 B12 B11 B10 B9
Annunciator REL REAR SRQ LSTN TALK REM ERR EDIT
Weighted value* 32768 16384 8192 4096 2048 1024 512 256
Binary value 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Bit B8 B7 B6 B5 B4 B3 B2 B1
Annunciator SMPL STAR TRIG ARM AUTO 4W MATH FILT
Weighted value* 128 64 32 16 8 4 2 1
Binary value 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
* The weighted values are for bits that are set to “1.” Bits set to “0” have no value.
Not all of the above indicators shown in above table may be used by the Model 2657A.
Local lockout
You can use the front-panel EXIT (LOCAL) key to cancel remote operation and return control to the
front panel. However, this key can be locked-out to prevent a test from being interrupted. When
locked, this key becomes a NO-OP (no operation). Configure the following attribute to lock or unlock
the EXIT (LOCAL) key:
display.locallockout =
lockout
Where
lockout
is set to one of the following values:
0
or
display.UNLOCK
1
or
display.LOCK
For example, to lock out the EXIT (LOCAL) key:
display.locallockout = display.LOCK
Load test menu
The LOAD TEST menu lists tests (USER, FACTORY, and SCRIPTS) that can be run from the front
panel. Factory tests are preloaded and saved in nonvolatile memory at the factory. They are available
in the FACTORY TESTS submenu. Named scripts that have been loaded into the run-time
environment can be selected from the SCRIPTS submenu. Refer to
Manage scripts (on page 6-3) for
additional information.
User tests
User tests can be added to or deleted from the USER TESTS submenu.