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| Features |
GL220 |
GL820 |
GL900 |
DI-730 |
DI-770 |
| Channels |
10 |
20 (expandable to 200) |
8 |
8 plus 24 expansion |
2 |
| Isolation |
Yes |
Yes |
Yes |
Yes |
No |
| Maximum sample rate |
100 Hz |
10 Hz |
100,000 Hz |
150,000 Hz |
25/100 MHz |
| Measurement functions |
Voltage, current, TC, pulse |
Voltage, current, TC, RTD, pulse |
Voltage, current, TC, pulse |
Voltage, current |
Voltage |
| Minimum voltage range |
20mV |
20mV |
20mV |
10mV |
200mV |
| Maximum voltage range |
50V |
50V |
500V |
1000V |
80V |
| Stand-alone operation |
Yes |
Yes |
Yes |
No |
No |
| Interface |
USB |
USB/Ethernet |
USB/Ethernet |
USB/Ethernet |
USB |
| Typical applications |
Data logging of slowly changing signals in PC-connected or stand-alone situations |
Higher voltage and frequency measurements as a general purpose T&M tool. |
Direct-connected voltage and current measurements in drive systems and other maintenance and troubleshooting applications |
As a replacement for standard laboratory instrumentation. |
| Comments |
Built-in display, battery option |
Built-in display, battery option |
Built-in display, battery option |
Make any industrial measurement with an optional amplifier backpack |
Functions as an oscilloscope, voltmeter, data logger, spectrum analyzer, and function/arbitrary waveform generator |
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