Specifications

7
FREQUENCY SENSITIVITY DURING CURRENT MEASUREMENT
INPUT RANGE MINIMUM SENSITIVITY (R.M.S. Sine Wave)
20 Hz ~ 20 kHz
500.00 µA 100 µA
5000.0 µA 250 µA
50.000 mA 10 mA
440.00 mA 25 mA
5.0000 A 1 A
10.000 A 2.5 A
PEAK HOLD
SIGNAL WIDTH ACCURACY FOR DC mV/VOLTAGE/CURRENT
Single event > 1 ms 2% + 400 for all ranges
Repetitive > 250 µs 2% + 1000 for all ranges
DUTY CYCLE AND PULSE WIDTH
[1]
FUNCTION MODE RANGE ACCURACY AT FULL SCALE
DUTY CYCLE DC Coupling 0.01% ~ 99.99% 0.3% per kHz + 0.3%
PULSE WIDTH 500 ms 0.01 ms 0.2% + 3
2000 ms 0.1 ms 0.2% + 3
[1] The positive or negative pulse width must be greater than 10 µs, and the duty cycle range should be considered. The pulse width range is determined by the frequency
of the signal.
U1252A/U1252B/U1253A/U1253B SQUARE WAVE OUTPUT
OUTPUT
[2]
RANGE RESOLUTION ACCURACY
FREQUENCY 0.5, 1, 2, 5, 6
[6]
, 10, 15, 20, 25, 30,
40, 50, 60, 75, 80, 100, 120, 150,
200, 240, 300, 400, 480, 600, 800,
1200, 1600, 2400, 48000 Hz
0.01 Hz 0.005% + 2
DUTY CYCLE
[3]
0.39% ~ 99.60% 0.390625% 0.4% of full scale
[4]
PULSE WIDTH
[4]
1/Frequency Range/256 0.2 ms + Range/256
AMPLITUDE Fixed 0 ~ +2.8 V 0.1 V 0.2 V
U1252A/U1252B/U1253A/U1253B FREQUENCY COUNTER SPECIFICATIONS
DIVISION RANGE RESOLUTION ACCURACY ± (% of reading +
No. of Least Significant Digit)
SENSITIVITY MIN. INPUT
FREQUENCY
MAXIMUM
MEASURE-
MENT LEVEL
U1252A U1253A
1
(secondary display “-1-“)
99.999 Hz 0.001 Hz 0.02% + 3
[1]
0.02% + 3
[1]
100 mV R.M.S.
0.5 Hz
< 30 Vpp
999.99 Hz 0.01 Hz
0.002% + 5,
<985 kHz
0.002% + 5,
< 985 kHz
9.9999 kHz 0.0001 kHz
99.999 kHz 0.001 kHz
999.99 kHz 0.01 kHz
200 mV R.M.S.
9.9999 MHz 0.0001 MHz 0.002% + 5,
< 1 MHz
100
(secondary display “-100-“)
9.9999 MHz 0.0001 MHz
0.002% + 5,
< 20 MHz
0.002% + 5,
< 20 MHz
400 mV R.M.S.
1 MHz
99.999 MHz 0.001 MHz
600 mV R.M.S.