Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation
2651A-901-01 Rev. A / March 2011 2-5
8. Display indicators (not shown)
The items listed below represent the possible display indicators and their meaning.
Indicator Meaning
EDIT: Unit is in the source editing mode
ERR: Questionable reading or invalid calibration step
REM: Unit is in remote mode
TALK: Unit is addressed to talk
LSTN: Unit is addressed to listen
SRQ: Service request is asserted
REL: Relative mode is enabled
FILT: Digital filter is enabled
AUTO: Source or measure autorange is selected
* (asterisk): Readings are being stored in the buffer
Rear panel
The rear panel of Model 2651A is shown below. The descriptions of the rear-panel components follow
the figure.
Figure 2: Rear panel Model 2651A
!
LINE RATING
100-240 VAC
50, 60 Hz
500VA MAX.
LINE FUSE
SLOWBLOW
5.0 A, 250 V
NO INTERNAL OPERATOR SERVICEABLE PARTS,
SERVICE BY QUALIFIED PERSONNEL ONLY.
REPLACE FUSE WITH SAME TYPE AND RATING.
WARNING:
CHANNEL A
RS-232
DIGITAL I/O
LAN
!
IEEE-488
GGGG
S
LO
SENSE/GUARD
S
HI
LO HI
OUTPUT
40V, 50A MAX.
!
2
1
5
7
9
8
10
6
4
3
1. RS-232
RS-232
Female DB9 connector. For RS-232 operation, use a straight-through (not null
modem) DB9 shielded cable (Keithley Instruments Model 7009-5) for connection
to the PC.
2. DIGITAL I/O
DIGITAL I/O
Female DB-25 connector. Pins provided: Fourteen digital input or output pins,
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).
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