The National Instruments 779640-01 (USB-6525) is an industrial, bus-powered USB digital I/O device featuring 16 channels of isolated I/O. It provides eight channel-to-channel isolated digital inputs that support signals up to ±60 VDC and eight channel-to-channel isolated solid-state relay (SSR) outputs with a switching capacity of 60 VDC or 30 Vrms at 500 mA. The device includes a 32-bit, 5 kHz event counter and advanced industrial features such as change detection, programmable power-up states, watchdog timers, and digital filtering. It is designed for demanding automation and control applications, including motor, valve, and pump control.
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| Number of Input Channels | 8channels |
| Number of Output Channels | 8channels |
| Digital Input Voltage Range | ±60VDC |
| Output Switching Voltage | 60 VDC / 30 VrmsVDC/Vrms |
| Maximum Output Current | 500mA |
| Isolation Type | Channel-to-Channel |
| Isolation Voltage | 60VDC |
| Counter Resolution | 32bits |
| Counter Frequency | 5kHz |
| Bus Interface | USB 2.0 |
| Operating Temperature Range | 0 to 55°C |
| Weight (with connectors) | 3.1oz |
| RoHS | ROHS3 Compliant |
| Safety | IEC 61010-1, EN 61010-1, UL 61010-1, CSA 61010-1 |
| Emc | EN 61326, EN 55011 Class A, CE, C-Tick, ICES, FCC Part 15 Class A |
