B: 1260 Gated Version
Introduction
A common requirement for applications which use photo detectors, cameras and other non-visual
sensing is the ability to rapidly switch the laser output ON and OFF. Simply applying and removing the
supply voltage is rarely satisfactory and in certain cases can result in the destruction of the module.
This is because laser diodes are very sensitive to spikes and surges, which are often the result of
uncontrolled supply switching. To overcome this limitation, the 1260 Gated Cameo has two additional
inputs that are provided to control the output of the laser module in a reliable and predictable way.
Control Input (Pin 3 - Yellow Lead)
A logic LOW level turns the output completely OFF (≤5%). However, applying a logic HIGH turns the
laser ON after a control input delay. This sets the maximum rate at which the module can switch fully
ON and OFF. Bandwidth is ≥ 100Khz.
Enable Input (Pin 4 - Blue Lead)
Some applications require a simple, slow speed ON/OFF Switching (such as an enable switch). The 1260
gated Cameo eliminates the requirement to provide an external switching device by providing a logic
compatible enable input, capable of operating from low power logic and micro-processors. In this OFF
condition, the module draws very little or no current and no light is emitted. The logic input is Non-
inverted.
Pin Connections and Functions
Connect the supplied 4 way JST connector to back of laser.
CW Mode:
To operate laser in CW mode the red, black, yellow and blue leads should be connected to the
following:
A. CW Mode
To operate the laser in CW mode connect the 2 way JST (see diagram A) to back of laser module.
Product Operation
Pin
Lead
1250 CW Cameo
Pin 1 Red Lead
3.3Vdc to +5 Vdc
Pin 2 Black Lead
0 Vdc
Pin
Lead
1260 Gated Cameo
Pin 1 Red Lead
3.3Vdc to +5 Vdc
Pin 2 Black Lead
0 Vdc
Pin 3 Yellow Lead
+V Supply
Pin 4 Blue Lead
+V on, -V off
