Measurement Computing E-1608-OEM - Manual (Page 12)

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Chapter 3
Functional Details
Analog input modes
The E-1608-OEM can acquire analog input data in two basic modes – software paced and hardware paced.
Software paced
You can acquire one analog sample at a time in software-paced mode. You initiate the A/D conversion with a
software command. The analog value is converted to digital data and returned to the computer. Repeat this
procedure until you have the total number of samples that you want.
The sample rate in software paced mode is system-dependent and can range from 1000 S/s to 5000 S/s on local
networks (lower over the Internet or wireless networks).
Hardware paced
You can acquire data from up to eight channels in hardware-paced mode. The analog data is continuously
acquired, converted to digital values, and written into the FIFO buffer on the device until you stop the scan. The
FIFO buffer is serviced in blocks as the data is transferred from the FIFO buffer to the computer memory
buffer. You start a continuous scan with either a software command or with an external hardware trigger event.
The maximum sample rate in hardware paced-mode from one to eight channels is 250 kS/s aggregate on local
hardwired networks (may be lower over the Internet or local wireless networks).
Device components
Device components are shown in Figure 2. Note that each screw terminal location is unpopulated.
1 Screw terminal J9 9 Ethernet connector
2 Header connector w4 10 Link/activity LED
3 Screw terminal J8 11 External power connector (power adapter sold separately)
4 Screw terminal J7 12 Power header connector W1
5 Factory reset button 13 Screw terminal J1
6 Power LED 14 Header connector W2
7 Activity LED 15 Screw terminal J2
8 Speed LED 16 Screw terminal J3
Figure 2. E-1608-OEM components