PICOLAS LDP-AV 4N55-90, Руководство пользователя, Страница: 9 / 14

9
Pulse Input
The trigger generator must be capable of delivering 5 V into 50 Ohms and at least 1 µs in
pulse width. The internal Schmitt-Trigger prevents unstable trigger response.
Note: It is recommended to keep the trigger pulse width within the range of 1 µs .. 100 µs.
The LDP-AV 4N55-90 has an internal short pulse sharpener included. This feature assures
a constant pulse width.
Channel Selection
This driver includes an internal multiplexer which allows to select a specific channel thus a
laser diode. For the selection of one specific laser diode see following table:
BIT1 BIT0 Channel / laser diode
0 0 0
0 1 1
1 0 2
1 1 3
Table 1: Description – How to select a specific channel
Figure 3: Close up of the laser diode footprint and their indicators
This driver is capable for individual coding methods. Therefore the LDP-AV 4N55-90
features the ability of fast channel selection up to 1 MHz.
If you need a flash driver instead of a sequential driver, please do not hesitate to
contact us. Customized driver topologies are possible.
Ch3
Ch1
Ch0
Ch2