External Wiring
Signal alignment for USB camera cables
CN1 USB 2.0 High Speed
Mini USB Type B
Signal alignment for trigger cables
The picture above shows the rear panel of the USB camera. The trigger and strobe are connected to the JP3 receptacle.
| Pin # | Color | Name | Description |
|---|---|---|---|
| 1 | Purple | T+ | Trigger signal input |
| 2 | Blue | T- | Trigger signal input |
| 3 | Green | S+ | Strobe signal output |
| 4 | Yellow | S- | Strobe signal output |
| 5 | Orange | - | Not in use |
| 6 | Red | - | Not in use |
| 7 | Brown | - | Not in use |
| 8 | Black | GND |
JP3 trigger connector
JST: BM08B-SRSS-TB (Compatible plug: JST 08SR-3S)
Power Specifications for Trigger and Strobe
Strobe Output : Output Voltage: 4V to 24V Output Current: Max. 500 mA
Trigger Input : 3 to 24 V
Internal Circuit Diagrams for Trigger and Strobe
Trigger Input Circuit
Strobe Control Output Circuit
Trigger Timing
| Symbol | Description |
|---|---|
| a | External Trigger Input |
| b | Shutter Timing |
| c | Strobe Output |
t1 ExposureDelay: Min. 70 microseconds
t2 ExposureTime
t3 StrobeDelay Min 70 microseconds
t4 StrobeTime Min 140 microseconds
t5 External trigger prohibited zone
[Unit of t1 to t4: microsecond]
KEY POINTS
To use a NS1500BU/CU camera in “Strobe” mode (external trigger mode), an external strobe lighting is necessary.
If the strobe is not used, the camera works in the rolling shutter mode and cannot recognize moving objects correctly.