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7700 MultiFrame Manual
7707IT Multi-Channel Intercom Fiber Transceiver
Page - 28
Revision 1.7
6.
JUMPER CONTROLS
Several jumpers, located at the front of the module are used to preset various operating modes. Figure
4-1 shows the locations of the jumpers.
6.1.
SELECTING THE CARD ID
To maintain a link between two companion 7707IT cards, the CARD ID jumper must be set differently on
each. This is required to guarantee synchronization of data in either direction.
CARD ID:
To maintain a link between two 7707IT cards, set this jumper to position A on one card, and to
position B on the other card.
6.2.
SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS
The FRAME STATUS jumper determines whether local faults (as shown by the Local Fault indicator) will
be connected to the 7700FR frame's global status bus.
FRAME STATUS:
To monitor faults on this module with the frame status indicators (on the Power
Supply FRAME STATUS LED's and on the Frame's Fault Tally output) install this jumper in the
On position (default)
When this jumper is installed in the Off position local faults on this module will not be
monitored.
6.3.
CONFIGURING THE MODULE FOR FIRMWARE UPGRADES
RUN/UPGRADE:
The RUN/UPGRADE jumper is used when firmware upgrades are being done to the
module. For normal operation it should be installed in the
RUN
position. See the
Upgrading
Firmware
chapter in the front of the binder for more information.
To upgrade the firmware in the module unit pull it out of the frame. Move the RUN/UPGRADE
jumper J16 into the
UPGRADE
position. Install the Upgrade cable provided (located in the
vinyl pouch in the front of the binder) onto SERIAL header J27 at the card edge. Re-install the
module into the frame. Run the upgrade as described in the
Upgrading Firmware
chapter in
the front of the binder. Once the upgrade is completed, remove the module from the frame,
move J16 into the
RUN
position, remove the upgrade cable and re-install the module. The
module is now ready for normal operation.