DI-4730 Hardware Manual
Specifications
3
2. Specifications
Analog Inputs
Number of Channels:
8
Channel Configuration:
Differential
Measurement range per channel:
Programmable ±10mV, ±100mV, ±1V, ±10V, ±100V, ±1000V
Isolation:
±1000V input-to-output and channel-to-channel
Max normal mode voltage (V
NM
):
800VDC or peak AC
Max common mode voltage (V
CM
):
1000VDC or peak AC
Max Input without Damage:
±1000VDC or Peak AC (±1000V and ±100V Ranges all other ranges
with fuse protection)
Common Mode Rejection:
100dB min @ DC to 60Hz
Accuracy:
Vin
≤
800V ±(0.25% of full scale range ±100µV)
Vin > 800V ±(0.5% of full scale range)
Input Impedance:
10M
Ω
for all ranges
Analog frequency response (each ch):
±1000, 100, 10, 1V: -3 db @ 5.0 kHz
±100mV: -3 db @ 4.50 kHz
±10mV: -3 db @ 1.30 kHz
Channel-to-channel crosstalk rejection:
-75 dB @100kHz into100
Ω
unbalanced
Analog input connector type:
Safety banana socket - 1 pair per channel
ADC Characteristics
Resolution:
12- to 16-bit
Above zero ADC counts: 2,047 to 32,767
Below zero ADC counts: 2,048 to 32,768
Max. throughput sample rate:
Standard: 160 kHz
Stand-alone: 20 kHz to 160 kHz (dependent on flash memory)
Min. throughput sample rate:
Standard: 20 Hz (2.2 samples per hour with WinDaq)
Stand-alone: 0.0017 Hz
Sample rate timing accuracy:
100 ppm
Digital Inputs
Number of Ports:
7
Configuration:
Input
Threshold levels:
TTL compatible
Absolute maximum applied voltage (V): 25 V dc
Reserved Digital Inputs
Port 1:
W
IN
D
AQ
remote events
Port 2:
W
IN
D
AQ
remote start/stop
Port 3:
Rate input
Port 4:
Count input
