4-3
OPERATION
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Fife H3257
MI 1-921 1
Enabling DC light mode
By default, the light emitted from the H3257 is pulsed at
7.5 kHz. When the H3257 is used as a light source for line scan
or array cameras, use DC light mode.
To configure the H3257 for DC light mode, the DC Mode Plug
must be installed on the 4-pin SYNC connector before turning
on the power.
See page 3-3
One DC mode plug is required for each H3257 LED Light
Source.
Enabling dual H3257
synchronization
The available lengths of the H3257 are sufficient to support
most applications. If necessary, two light sources may be used
to achieve the required length.
Dual light sources must be synchronized when used with a
single sensor. This occurs automatically when a synchroniza-
tion cable is installed between the 4-pin SYNC connector of
each H3257 prior to turning on the power.
See page 3-3
Table 4 summarizes the behavior of the H3257 based on the
configuration of the SYNC connector.
Quantity
of H3257s
SYNC Connection
(first H3257)
SYNC Connection
(second H3257)
Resulting Mode
1
No connection
n/a
Pulsed light
1
DC mode plug
n/a
DC light (single)
2
DC mode plug
DC mode plug
DC light (dual)
2
29LH6610-M4M-xS (x= length in meters)
Synchronized pulsed light
Table 4. Summary of H3257 light modes based on SYNC connector
Synchronization is not required if each H3257 is to operate in
DC light mode.
A power cycle must occur for synchronization or a light mode
change to occur.