Ocean Optics USB-AOUT - Manual (Page 5)

USB-AOUT Installation and Operation Instructions
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You can verify correct operation of your trigger and the USB-AOUT device by connecting a
multi-meter to the device. Pin 6 is ground. Pin 8 is “hot.” Be sure to set your multi-meter to
the milliamp setting. Then control your light source to see the corresponding change in
current-level. If the light source varies too rapidly, your multi-meter will not reflect the
transient current-level variations. Small variations in the current-level are normal, on the order
of a few hundredths of a milliamp, even under seemingly steady light conditions.
USB-AOUT Specifications
USB-AOUT Pinout Information
The following section contains information on the 10-pin output connector on the USB-AOUT.
10 8 6 4 2
9 7 5 3 1
Pinout Diagram of the 10-Pin Output Connector on the USB-AOUT
Pinouts
4-pin TP Connector
The 4-pin TP connector on the side of the USB-AOUT has no function.
Pin Function
1 V
USB
or 5V in
2 RS232 Tx
3 RS232 Rx
4 Lamp Enable
5 Continuous Strobe
6 Ground
7 External Trigger In
8 Signal Output (4-20 mA)
9 I
2
C SCL
10 I
2
C SDA