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2400 Series Fiber Converter Manual
2405EO SMPTE259M Re-Clocking Electrical to Fiber Converter
5.
USER CONTROLS
The 2405EO 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. Section 5.1 gives specific information about the DIP switch functions.
5.1.
SELECTING THE VIDEO STANDARD
DIP switch 1 determines whether the module will operate as a distribution amplifier with SMPTE 259M
(143 to 360 Mb/s), SMPTE 344M (540 Mb/s) or DVB-ASI video signals or with SMPTE 310M (19.4 Mb/s)
signals as shown in Table 5-2.
DIP 1
FUNCTION
Off
259M
(default)
On
310M
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 250 meters of Belden 8281 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-10
DIP Switch
Function
1
Reclock Mode Selection
2
Future Use
3
4
Table 5-1: DIP Switch Functions
DESCRIPTION
The 2405EO will reclock SMPTE 259M (143 to 360 Mb/s),
SMPTE 344M (540 Mb/s) or DVB-ASI video signals.
The 2405EO will reclock SMPTE 310M (19.4 Mb/s) video signals.
Table 5-2: Reclock Mode Switch Setting
Revision 2.1
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