Extron Electronics MTP_HDMI U R User Guide - Manual (Page 17)

Setting the Jumpers
The MTP/HDMI U R receiver has three jumpers on the main board:
• Jumper 1 (JMP1) controls RS-232 directional communication (bidirectional or
unidirectional)
JMP1 is in closed position by default, and configured to send serial
data both ways, transmitter-to-receiver, receiver-to-transmitter
(bidirectional).
• Jumpers 2 (JMP2) and 3 (JMP3) control vertical and horizontal sync
respectively (negative or positive).
Jumpers 2 and 3 are in open position by default and configured for
negative sync (H-, V-).
Setting JMP1 for RS-232 Communication
JMP1 can be repositioned to enable unidirectional (one-way, pass through) communication
as follows:
1. If applicable, disconnect all cables, remove the receiver from its installation location, and
remove any mounting brackets installed.
2. Remove the two screws from each side of the receiver (four screws total) and lift the top
cover off of the receiver.
3. Locate jumper JMP1 on the main board. Remove and reposition it over one pin (see
figure below).
Reposition the jumper
block to cover one pin.
Figure 13. Setting Jumper 1 to Unidirectional
NOTE: If JMP2 and JMP3 also need resetting, see the “ Setting JMP2 and JMP3 to
Positive Vertical and/or Horizontal Sync Polarity ” section on page 12,
before replacing the top cover.
4. Replace the cover by reinstalling the four screws removed in step 2. If any mounting
brackets were removed in step 1, put them back into position as you reinstall the screws
5. If applicable, reinstall the receiver and reconnect all cables.
NOTE: JMP1 should be set to unidirectional when an MTP DA is installed as part of
the system to avoid any RS-232/audio detection issues.
When an MTP/HDMI U R series receiver is used with an MTPX matrix
switcher, JMP1 should be set to unidirectional for transmitter to receiver
communication, otherwise it should be set to bidirectional when using the
RS-232 output insert connections on the switcher.
The analog RS-232 port DOES NOT support IR control.
To reset the RS-232 jumper to default, open the unit and place the jumper block to cover
both pins.
JMP1
JMP3
JMP2
Default settings as
viewed from rear
MTP/HDMI U R • Operation 11