Model 2750 Multimeter/Switch System User’s Manual Getting Started 1-11
4 Display annunciators:
* (asterisk) Readings being stored in buffer.
↔ (more) Indicates additional selections are available.
))) (speaker) Beeper on for continuity or limits testing.
Digital input/output or analog output active (set to non-default value).
4W 4-wire resistance or 4-wire RTD temperature reading displayed.
DCKT Dry circuit resistance reading displayed.
~AC AC function selected (ACV, dB, or ACI).
AUTO Auto range enabled.
BUFFER Recalling readings stored in buffer.
CHAN Setup or a reading for a switching channel displayed.
DELTA Channel average enabled.
ERR Questionable reading, or invalid cal step.
FAST Fast reading rate selected.
FILT Filter enabled for selected function.
HIGH Reading has reached or exceeded the enabled high limit.
LSTN Instrument addressed to listen over GPIB.
LOW Reading has reached or exceeded the enabled low limit.
MATH mX+b, percent, or reciprocal (1/X) calculation enabled.
MED Medium reading rate selected.
MON Monitor channel displayed.
OCOMP 4-wire offset compensated ohms enabled.
RATIO Channel ratio enabled.
REAR Front panel input terminals disconnected.
REL Relative enabled for selected function.
REM Instrument in GPIB remote mode.
SCAN Scanning operation being performed.
SHIFT Accessing a shifted key.
SLOW Slow reading rate selected.
SRQ Service request over GPIB.
STAT Displaying buffer statistics.
STEP Stepping operation being performed.
TALK Instrument addressed to talk over GPIB bus.
TIMER Timer controlled triggering in use.
TRIG External triggering selected (trigger link, TRIG key, or GPIB).
5 Slot indicators:
Lit lamp indicates that the slot has a switching module or pseudocard installed in it. When the VIEW
option of the CARD menu is used, only the lamp that corresponds to the selected slot is turned on.
6 INPUTS switch:
Use to select front panel inputs (out; F) position, or switching module inputs (in; R) position.
NOTE For remote programming, the following command queries the INPUTS switch
position:
SYSTem:FRSwitch? ' Query INPUTS switch; 0 = rear, 1 = front.
7 Front panel inputs:
INPUT HI and LO Used for DCV, ACV, Ω2, CONT, FREQ, PERIOD, and thermocouple/thermistor
TEMP measurements.
SENSE HI and LO Use with INPUT HI and LO for
Ω4 and RTD TEMP measurements.
AMPS Use with INPUT LO for DCI and ACI measurements.
Amps fuse holder Holds current fuse for front panel amps input.
2750-900-01.book Page 11 Wednesday, August 3, 2011 7:56 AM
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