LAMBDA 721 OPERATION MANUAL – REV. 1.10C (20210517)
36
E.2.
Configuration
Rear-Panel
Figure E-3. Lambda 721 rear panel, connectors, and controls.
DIP Switches
Figure E-4. Lambda 721 left-side panel and DIP switches.
Table E-1. Configuration Switches 1 – 8.
Sw #
Definition
State
Setting Position
1
TTL level state on power-
up
Low*
Off*
Up*
High
On
Down
2
I/O interface return of data
from Lambda 10-3 “Get
Controller Type & Config.”
and “Get Status”
commands (Ver. 1.26+)
Enabled*
Off*
Up*
Disabled
On
Down
3 Camera Mode while
running the Ring Buffer
Disabled: Stays
ON until next
strobe*
Off*
Up*
Enabled: Turns
OFF before
next strobe
On
Down
4
I/O interface return of
current Ring Buffer entry
LED number(s) while Ring
Buffer is running
Enabled*
Off*
Up*
Disabled
On
Down
5 Select data (“Baud”) rate
for I/O interface
9600 bps*
Off*
Up*
57600 bps
On
Down
6 Reserved
Off*
Up*
7 Reserved
Off*
Up*
8
Allow setting of maximum
current for each LED on
power up
Disabled*
Off**
Up*
Enabled
On
Down
* Factory default setting.
Figure E-5. LED cube placement.
E.3.
External Control
Controlling the Lambda 721 externally via
computer is accomplished by sending
commands over the USB interface between the
computer and the relevant connector on the
rear panel of the Lambda 721 controller.
USB Interface: The USB device driver for
Windows is downloadable from Sutter
Instrument’s web site (
). The
Lambda 721 requires USB CDM (Combined
Driver Model) Version 2.10.00 or higher. The
CDM device driver for the Lambda 721 consists
of two device drivers: 1) USB device driver, and
2) VCP (Virtual COM Port) device driver.
Install the USB device driver first, followed by
the VCP device driver. The VCP device driver
provides a serial RS-232 I/O interface between
a Windows application and the Lambda 721.
Although the VCP device driver is optional, its
installation is recommended even if it is not
1 2 3 4 5 6 7 8
USB Device
Receptacle
Configuration DIP switches accessible
on right side with small screwdriver
through a ventilation hole
TTL Inputs for
LEDs 1 - 7
Ring Buffer
Strobe Control
Power input module: Receptacle,
fuse, & switch
Front
Rear
Front
Rear
LED Cubes Placement
(Top view with LED cube hatch
cover removed)
1
2
3
Top
4
5
6
7
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