DA-710A
DC Amplifier

Summary

· 2 channels per unit
· Built-in LPF
· Allowable common mode input 300 V and max measuring input ±110 V
· With voltage calibration function

Features

The DA-710A is a highly accurate 2-channel isolated DC Amplifier which features strong against noise, high input impedance, high gain accuracy, and high stability.

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DA-710A
DC Amplifier

Specifications

Channels 2
Input Modes Differential, isolated between input and
output, and between channel and channel
Isolation Methods Optical
Input Impedance 10 + 10 MΩ or more (ATT ×1 and OFF)
1 + 1 MΩ or more (ATT×1/100)
Gain 13 steps of 10, 20, 50, 100, 200, 500 (×1 and ×1/100) and OFF; continuously variable between ×1 and x2.5 or more
Gain accuracy:
±0.1% FS (ATT ×1)
±0.3% FS (ATT × 1/100)
Stability Zero Balance Within ±5μVRTI/ ºC (With input shorted and gain 500)
Gain: Within ±0.02%/ºC
Nonlinearity Within ±0.05% FS
Frequency Response DC to 10 kHz (+1, -3 dB)
Output A ±10 V (Load resistance 10 kΩ or more)
Output B ±10 V (Load resistance 10 kΩ or more)
Output Impedance 1 Ω or less
CMRR 120 dB or more (DC to 60 Hz)
(With balanced input of 1 kΩ, gain 500 and ATT ×1)
Allowable Common Mode Voltage ±300 VDC or AC peak
Insulation resistance 1000 MΩ or more
Allowable Max. Input Voltage ±2 VDC or AC peak (ATT × 1)
±110 VDC or AC peak (ATT ×1/100)
Zero Balance Adjustment Range (Output) ±5 V (OUT A and B linked)
±1 V (OUT B independent)
Noise 10 μVp-p (RTI) + 6 mVp-p (RTO) (With input shorted, gain 500 and ATT ×1)
Calibration Voltage (Output) Within 4 V ±0.2%
Settling Time 100 μs or less, output: Within ±0.1%
Overload Recovery Time 100 μs or less, output: Within ±0.1%
Crosstalk Between Channels 10 μVp-p (RTI) +6 mVp-p (RTO) or less
Common Mode Crosstalk Rejection Ratio 10 μVp-p (RTI) + 6 mVp-p (RTO) or less
LPF Transfer characteristic : 2nd Order Butterworth
Cutoff frequencies : 6 steps of 10, 30, 100, 300, 1k Hz and FLAT(6 steps)
Amplitude ratio at cutoff point : Within -3±1 dB
Attenuation : (-12±1) dB/oct
Operating Temperature -10 to 50°C
Operating Humidity 20 to 80% (Non-condensing)
Storage Temperature -20 to 70°C
Storage Humidity 5 to 95% RH (Non-condensing)
Withstand Voltage Between [Channel 1 input connector pin] and
[Output, case, AC power supply]: 1 kVAC for 1 min
Between [Channel 2 input connector pin] and
[Output, case, AC power supply]: 1 kVAC for 1 min
Between [AC power supply] and
[Output, case]: 1 kVAC for 1 min
Between [Channel 1 input] and
[Channel 2 input]: 1 kVAC for 1 min
Power Supply 100 VAC, 4.5 VA
Dimensions 49 W x 128.5 H x 262.5 D mm (Excluding protrusions)
Weight Approx.1.0 kg
Standard Accessories Input cable U-108
Output cable U-63
AC power cable P-25 (With 2-pin conversion plug CM-39)
Miniature screwdriver
CD-R (Instruction manual)
Simplified manual
Optional Accessories Housing case YC-A
Amplifier stand FA-1B

Dimensions

DA-710A

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