Providing ±75 mV voltage measurement range, Models DT9871U for USB and DT8871U for Ethernet offer less than ±1.5 µV of noise. They have up to 48 dedicated 24-bit A/D converters, up to 48 dedicated CJC circuits, and 1,000 V channel-to-channel galvanic isolation. With 16 (8/8) opto-isolated digital input and output lines for monitoring and driving relays, units provide constant throughput across all channels at rates up to 10 Hz/channel.