Keithley 2790, Reference Manual

Page: 348 / 568

Model 2790 SourceMeter
®
Switch System Reference Manual 14-3
ASCII data format
The ASCII data format is in a direct readable form for the operator. Most programming
languages easily convert ASCII mantissa and exponent to other formats. However, some
speed is compromised to accommodate the conversion.
Figure 14-1 shows an example
ASCII string that includes all the data elements. See “FORMat:ELEMents <item list>,”
page 14-6 , for information on the data elements.
Figure 14-1 also shows the byte order of the data string. Data elements not specified by the
:ELEMents command are simply not included in the string.
Figure 14-1
ASCII data format
+1.23456789E-03VDC, +11.664SECS, +236RDNG, 000, 0000LIMITS
Reading* Timestamp
Units
Channel
Number
Limits
Code
Reading
Number
Units:
VDC = DC Volts
VAC
= AC Volts
ADC = DC Current
AAC = AC Current
OHM = 2-Wire Resistance or Continuity
OHM4W = 4-Wire Resistance
*An overflow reading is displayed as +9.9E37 with no limits.
Units:
HZ = Frequency
SECS = Period
C
= Temperature in °C
F = Temperature in °F
K = Temperature in °K