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5.
USER CONTROLS
The 2405EO-HD is equipped with a 4 position DIP switch to allow the user to configure the module. The
On position is down, or closest to the printed circuit board. Table 5-1 gives an overview of the DIP switch
functions.
5.1.
SELECTING RECLOCK OR NON-RECLOCK MODE
DIP switch 1 determines whether the module will operate as a reclocking distribution amplifier with SMPTE
292M (1.5 Gb/s) video signals or as a non-reclocking distribution amplifier with other data rates as shown
in Table 5-2.
DIP 1
FUNCTION
Off
Reclock
(default)
On
Non-reclock
5.2.
SETTING THE EQUALIZER WARNING THRESHOLD
The EQ Adj. trimpot (accessible by removing the top cover of the module) is used to set the threshold of
the cable equalizer warning. The equalizer warning is factory set to 125 meters of Belden 1684 cable, but
may be adjusted for other cable types or cable lengths. To adjust the cable equalizer warning threshold,
connect a signal to the input of the module using the required length of cable. Adjust the trimpot slowly
until the Weak Signal warning LED comes on. You can verify that the equalizer warning is operating
correctly by removing a few meters of cable from the input. The LED should go off.
2405EO-HD SMPTE292M Re-Clocking Electrical to Fiber Converter
DIP Switch
Function
1
Reclock Mode Selection
2
Future Use
3
4
Table 5-1: DIP Switch Functions
DESCRIPTION
The 2405EO-HD will reclock 1.485 Gb/s video signals.
The 2405EO-HD will act as a non-reclocking distribution amplifier
for signals in the 19.4 Mb/s to 1.485 Gb/s frequency range.
Table 5-2: Reclock Mode Switch Setting
Revision 1.3
2400 Series Fiber Converter Manual
2405EO-HD-9
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