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8842A
Instruction Manual
1-6
CURRENT
Input Characteristics
RESOLUTIONRANGE FULL SCALE 5½
DIGITS
5½ DIGITS 4½ DIGITS
1
200 mA
2
199.999 mA 1 µA 10 µA
2000 mA 1999.99 mA 10 µA 100 µA
1. 4½ digits at the fastest reading rate.
2. The 200mA range is available for dc current only.
DC Accuracy
NORMAL (S) READING RATE...............±(% of reading + number of counts).
RANGE 90 DAYS 23±5°C 1 YEAR 23±5°C 2 YEARS 23±5°C
200 mA 0.04 + 40 0.05 + 40 0.08 + 40
2000 mA
≤1A 0.04 + 4 0.05 + 4 0.08+4
>1A 0.1 + 4 0.1 + 4 0.15+4
MEDIUM AND FAST READING RATES In medium reading rate, add 2 counts (20 counts on 200 mA
range) to number of counts. In fast reading rate, use 2 (4½
digit mode) counts (20 counts on 200 mA range) for number
of counts.
AC Accuracy (Option –09)
NORMAL (S) READING RATE...............±(% of Reading + Number of Counts).
23±5°C, for sinewave inputs ≥10,000 counts
1
.
FREQUENCY IN HERTZ
20-45 45-100 100-5K*
ONE YEAR 2.0 + 200 0.5 + 200 0.4 + 200
TWO YEAR 3.0 + 300 0.7 + 300 0.6 + 300
*Typically 20 kHz
1. For sinewave inputs between 1,000 and 10,000 counts, add to number of counts 100 counts for
frequencies 20 Hz to 5 kHz (typically 20 kHz).