Rear Panel - Keithley 2651A Reference Manual

Model 2651A High Power System SourceMeter® Instrument Reference Manual
8. Display indicators (not shown)
The items listed below represent the possible display indicators and their meaning.
Indicator
EDIT:
ERR:
REM:
TALK:
LSTN:
SRQ:
REL:
FILT:
AUTO:
* (asterisk):

Rear panel

The rear panel of Model 2651A is shown below. The descriptions of the rear-panel components follow
the figure.
1. RS-232
2. DIGITAL I/O
2651A-901-01 Rev. A / March 2011
Meaning
Unit is in the source editing mode
Questionable reading or invalid calibration step
Unit is in remote mode
Unit is addressed to talk
Unit is addressed to listen
Service request is asserted
Relative mode is enabled
Digital filter is enabled
Source or measure autorange is selected
Readings are being stored in the buffer
Figure 2: Rear panel Model 2651A
2
3
LINE FUSE
SLOWBLOW
5.0 A, 250 V
LINE RATING
100-240 VAC
50, 60 Hz DIGITAL I/O
500VA MAX.
IEEE-488 LAN
!
4
5
Female DB9 connector. For RS-232 operation, use a straight-through (not null
RS-232
modem) DB9 shielded cable (Keithley Instruments Model 7009-5) for connection
to the PC.
Female DB-25 connector. Pins provided: Fourteen digital input or output pins,
DIGITAL I/O
seven GND pins, three +5 V pins, and one pin for output enable.
Use a cable equipped with a male DB-25 connector (Keithley Instruments part
number CA-126-1).
1
RS-232
!
NO INTERNAL OPERATOR SERVICEABLE PARTS,
WARNING: SERVICE BY QUALIFIED PERSONNEL ONLY.
REPLACE FUSE WITH SAME TYPE AND RATING.
8
9
6
7
Section 2: General operation
SENSE/GUARD OUTPUT
S S LO HI
LO G G G G HI
40V, 50A MAX.
CHANNEL A
!
10
2-5