752a
Fluke 752A Reference Divider
Division Ratio
Division Ratio
10:1 ±0.2 ppm
Input: 0V to 100V
Division Ratio
100:1 ±0.5 ppm
Input: 0V to 1000V
Specifications
*
Ratio Ranges 10:1 and 100:1
Ratio Uncertainty Ratio accuracies that apply for a temperature variation of
less than ± 1°C from the self-calibration temperature
(between 18°C and 28°C) for up to 8 hours following
self-calibration:
Range 10:0
Input Voltage: 0 to 100V
Output Uncertainty: 0.2 ppm
Null Accuracy: ±0.5 µV
* *
Range 100:1
Input Voltage: 0 to 1000V
Output Uncertainty: 0.5 ppm
Null Accuracy: ±1.0 µV
* *
Temperature
Coefficient
≤ ± 1 ppm per °C over range of 18°C to 28°C (typically
0.1 ppm per °C from 15°C to 30°C
Input Resistance
10:1 Ratio: 380 kΩ ± 1%
100:1 Ratio: Divider is 4 MΩ; Driven Guard is 4 MΩ; total
is 2 MΩ ± 1%
Maximum Input
Voltage
200V for the 10:1 ratio
1100V for the 100:1 ratio
Power Coefficient
≤ 0.05 ppm of output with 100V applied for 10:1 ratio
and ≤ 0.3 ppm of output with 1000V applied for 100:1
ratio (included in the ratio accuracy specifications)
Temperature 0°C to 50°C, operating; -40°C to 75°C non-operating
Relative Humidity
≤ 75% to 40°C, ≤ 45% to 50°C, non-condensing,
operating; ≤ 100% 10-50°C, non-operating
Altitude
≤ 3050m (10,000 ft) operating; ≤ 12,220m (40,000 ft)
non-operating
Vibration Per MIL-T-28800C, Type III, Class 5, Style E
Safety IEC 348, 2nd edition, 1978; ANSI-C39.5, 1980, CSA
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