Keithley 1793 Instruction Manual page 6

Ieee standard 488 output
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GENERAL INFORMATION
MODEL 1793/6423
TABLE 1-2
Specifications, Model 1793/6423 IEEE-488 Output
OUTPUT:
DATA FORMAT:
4-1/2 digit ASCII data, sign, and overrange.
.XXXXX. ^CR
LF,
'
Sign
(Plus implied)
Displ ay
Termi nator
T
OVERRANGE OUTPUT:
ASCII
"OVER" in place of "XXXXX"
LOGIC LEVELS:
Meets all IEEE Std. 488-1978 specifications.
MODES OF OPERATION: (Selected by internal switches)
TALK ONLY:
Allows user to connect meter to an IEEE-compatible
listener. Data outputted at seven switch
selectable rates from 2.5 rdgs/sec to 1 rdg/hr.
ADDRESSABLE:
Allows user to connect meter to an IEEE-compatible
controller. Address selected by internal switches.
Non-Triggered addresses are even from 0 to 28.
Triggered address is non-triggered address +1.
NON-TRIGGER:
Upon receiving its non-trigger address, outputs the
displayed reading
TRIGGER:
Upon receiving its trigger address, initiates a
single A-D conversion and outputs the reading 400
msec later.
ISOLATION:
Digital outputs isolated from input circuitry
(lO^^n, 40pF typ).
ENVIRONMENT:
OUTPUT CONNECTOR:
INSTALLATION:
Model 1793 Operate: 0 to 55°C, 0 to 80% RH.
Storage: -25 to +70°C.
Model 6423 Operate: 20 to 30°C, 0 to 70% RH.
Storage:
-25 to +55°C.
24-pin IEEE-488 standard connector.
Field installable, mounts within and powered from
meter. Adds 0.6kg (1.3 lbs), 10 watts.
Model 1793
Precludes 1788, 1792 installation.
Model 6423
Precludes 6422, 6428 installation.
ACCESSORIES AVAILABLE:
1.8m (6 ft.) IEEE Cable Keithley Model 7008.
1-2

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