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Upgrades and Maintenance, cont'd
Changing the sync termination
In a sync BME, the first eight physical inputs on each I/O board are equipped with
sync termination DIP switches. Each switch provides the option of selecting either
510 ohms or 75 ohms.
Change the sync termination of the sync I/O board as follows:
1.
2.
CAUTION
3.
Figure 6-10 — Sync termination DIP switch
4.
5.
www.camboard.de
6-12
Matrix 12800 Switchers • Upgrades and Maintenance
CAMBOARD Electronics
If changing the configuration of an installed board, open and remove the front
door.
On the I/O cardcage door, turn the left and right knurled knobs ¼-turn
counterclockwise. Lower the door.
Do not touch the electronic components or the connectors on the backplane
or on the circuit boards without being electrically grounded. Handle
circuit boards by their edges only. ESD can damage ICs, even if you
cannot feel, see, or hear it.
Select the correct input board and the specific input's sync termination DIP
switch to change (figure 6-10). Rock the DIP to the rear for 75-ohm
termination (the default setting). Rock the switch to the front for 510-ohm
termination.
All input numbers identified in figure 6-10 are physical inputs.
DIP
Input
switch
board 1
1
Input 1
2
Input 2
3
Input 3
4
Input 4
5
Input 5
6
Input 6
7
Input 7
8
Input 8
Raise the I/O cardcage door to vertical and turn the left and right knurled
knobs ¼-turn clockwise.
Close the front door.
Tel. 07131 911201
Fax 07131 911203
Switch
1
2
3
4
5
6
7
8
Input
Input
Input
board 2
board 3
board 4
Input 33
Input 65
Input 97
Input 34
Input 66
Input 98
Input 35
Input 67
Input 99
Input 36
Input 68
Input 100
Input 37
Input 69
Input 101
Input 38
Input 70
Input 102
Input 39
Input 71
Input 103
Input 40
Input 72
Input 104
ce-info@camboard.de
DIP
Switches
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