166 Agilent U1251A/U1252A User’s and Service Guide
8 Specifications
Divide 100 (secondary display “-100-”)
PEAK HOLD (Capturing changes)
U1252A SQUARE WAVE OUTPUT
[1] Output impedance: 3.5 k
W
maximum.
[2] The positive or negative pulse width must be greater than 50 μs for adjusting
the duty cycle or pulse width under different frequency. Else, the accuracy and
range will be different from the definition.
[3] For signal frequencies greater than 1 kHz, an addition of 0.1% per kHz is added
to the accuracy.
Range Resolution Accuracy
± (% of reading + No. of
Least Significant Digit)
Sensitivity Min. Input Frequency
9.9999 MHz 0.0001 MHz 0.002 %+5,
<20 MHz
400 mV R.M.S. 1 MHz
99.99 MHz 0.001 MHz
600 mV R.M.S.
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
OUTPUT
(1)
RANGE RESOLUTION ACCURACY
FREQUENCY 0.5, 1, 2, 5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 80, 100, 120, 150,
200, 240, 300, 400, 480, 600, 800, 1200, 1600, 2400, 4800 Hz
0.01Hz 0.005% +2
DUTY CYCLE
(2)
0.39% – 99.60% 0.390625%
0.4% of full scale
(3)
PULSE WIDTH
(2)
1/Frequency Range/256 0.2 ms + Range/256
AMPLITUDE Fixed 0 to +2.8 V 0.1 V 0.2 V
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