USB-2533 User's Guide
Functional Details
24
SCSI - 68 pin (P5) connector
The 68-pin SCSI connector includes pins for the following:
16 single-ended/eight differential analog inputs (64 single-ended/32 differential analog inputs available
only from
J5
and
J6
40-pin connectors)
24 digital I/O
Four counter inputs
Two timer outputs
A/D pacer clock I/O
DAC pacer clock I/O
TTL trigger
self calibration
+5 VDC
analog commons
digital commons
40-pin headers (J5, J6, J7, J8)
Four 40-pin headers (
J5
through
J8
) provide alternative connections to the signals of the SCSI connector.
Up to 64 single-ended/32 differential analog inputs are available from
J5
and
J6
connectors as well.
You can get a female connector for each header by connecting a C40FF-
x
cable (40-pin header to female 40-pin
header) to each header
.
9-slot screw terminal (TB7)
You can use the on-board screw terminal connector (TB7) to connect up to four TC inputs. TB7 uses the
following analog channels to obtain its four differential channels:
TC CH0: CH 0 (+); CH 8 (-)
TC CH1: CH 1 (+); CH 9 (-)
TC CH2: CH 2 (+); CH 10 (-)
TC CH3: CH 3 (+); CH 11 (-)
When using the thermocouple channels, do not connect signals to the associated channels on the SCSI
connector or J5.
External power connector
Although the USB-2533 is powered by a USB port on a host PC, an external power connector is available when
the host PC’s USB port cannot supply adequate power, or if you prefer to use a separate power source.
Connect the optional PS-9V1AEPS-2500 power supply to the external power supply connector. This power
supply plugs into a standard 120 VAC outlet and supplies 9 VDC, 1 A power to the USB-2533.
Summary of Contents for USB-2533
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