Measurement Computing DaqBoard 3000USB Series - Manual (Page 29)

Note 3
Block Diagram for DaqBoard/3005USB and /3035USB
Note 1: Pins for all digital I/O, counters, timers, and 16 analog inputs are on the 68-pin SCSI connector.
Chapter 2 includes pinouts.
Note 2: Optional power source (TR-2 adapter) connects to the External Power connector if the USB cannot supply
enough power. See Specifications (Chapter 7) in regard to power consumption.
Note 3: DaqBoard/3005USB can accept 16 Single-Ended, or 8 Differential analog inputs. DaqBoard/3035USB can
accept 64 Single-Ended, or 32 Differential analog inputs. The /3005USB and /3035USB boards have no analog
outputs.
DaqBoard/3000USB Series User’s Manual 988093 Device Overviews 1-3