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8. SPECIFICATIONS
8-1 SPECIFICATIONS
DPM-911/951
DPM-912/952
DPM-913
Measuring Target
Strain Gage, Strain Gage Transducer
Measuring CH
1 CH/unit
Applicable Bridge Resistance
60 ohm to 1000 ohm
Gage Factor
2.00 fixed
Bridge Power
2 Vrms, 0.5 Vrms selectable
Voltage
Frequency
5 kHz sine wave
12 kHz sine wave
28kHz sine wave
Balancing Range
*9
Within ±2% (±10000 m/m)
Within 2000 pF
Resistance
Capacitance
Balancing Method
Resistance
True electron auto-balance method
Accuracy
Within ±0.5 m/m
(When 500 m/m is input, outputs 10 V,
excitation voltage: 2 Vrms)
Storage
Written into nonvolatile memory
Capacitance
CST method (Auto-tracking)
Nonlinearity
Within ±0.1% FS
Within ±0.2% FS
Output Impedance
Approximately 2 ohm
Calibration Signal (CAL)
Accuracy
1 m/m steps within ±(1 to 9999) m/m
[Setting: CAL switch (4-digit digital switch)]
Within ±(0.5% + 0.5 m/m)
Within ±(0.5% + 1.0 m/m)
Sensitivity Adjuster
The amplifier sensitivity is set in combined with the CAL and VOLTAGE
OUT switches (4-digit digital switch)
CAL Switch Range
VOLTAGE OUT Switch Range
1 m/m steps up to 100 to 9999 m/m
0.01 V steps up to 1.00 to 10.00 V
[Condition: When 500 m/m is input, outputs 10.00 V (× 20000) to 5000
m/m is input, outputs 1.00 V (× 200)]
[Setting Example: When 500 is set to CAL, VOLTAGE OUT is 10.00 (×
20000) to 5000 is set to CAL, VOLTAGE OUT is 1.00 (× 200)
Accuracy
Within ±0.5%
Within ±(0.5%+5mV)
Sensitivity Fine Adjustment
Range: 1 to 1/2.5
Frequency Response Range
911 DC to 2.5 kHz
Deviation: ±10%
951 DC to 2 kHz
Deviation: ±10%
DC to 5 kHz
Deviation: ±10%
DC to 10 kHz
Deviation: ±10%
Low-Pass Filter (LPF)
Transfer Characteristic
Secondary Butterworth Type
Cutoff Frequency
6 steps: 10, 30, 100, 300 Hz, 1 kHz, and FLAT
Amplitude Ratio at the cutoff point
-3 ±1 dB
Attenuation
-12 ±1 dB/oct.
(Excluding when setting 1 kHz)
-12 ± 1 dB/oct.
High-Pass Filter(HPF)
Cutoff Frequency
0.2 Hz or OFF
