7700 MultiFrame Manual
7707BPX Optical Bypass Protection Switch
Revision
1.6
Page-13
5. DIP
SWITCHES
The 7707BPX is equipped with a 4 position DIP switch to allow the user to select various functions. DIP
switch 1 is located at the top of the DIP switch (farthest from to the card ejector). Table 5-1 gives an
overview of the DIP switch functions. Sections 5.1 and 5.2 give a detailed description of each of the DIP
switch functions. The On position is down, or closest to the printed circuit board.
DIP Switch Function
1
Auto Switch Back
2
Manual Mode Enable
3
GPI Active State
4
Dual GPI Control Mode
Table 5-1: DIP Switch Functions
5.1.
CONTROLLING THE OPTICAL SWITCH OPERATING MODE
DIP switches 1, 2 and 4 allow the user to select one of four operating modes for the 7707 BPX:
DIP 1
Switch
Back
DIP 2
Manual
Mode
DIP 4
Dual GPI
Mode
Mode Name
Mode Description
--- On Off Single
GPI
Switch to input A if GPI1 is Active.
Switch to input B if GPI1 is Inactive.
--- On On Dual
GPI
Switch to input A if GPI1 is Active.
Switch to input B if GPI2 is Active.
Off Off Off Invalid Do
not
use.
Off Off On
Auto – no
switch back
Switch to input A if GPI1 is Active.
Switch to input B if GPI2 is Active.
If both GPIs are inactive then switch to input B if
power on B is above threshold B and power on input
A is below threshold A. Use GPI1 to switch back to
input A.
On Off Off Invalid Do
not
use.
On Off On
Auto switch
back
Switch to input A if GPI1 is Active.
Switch to input B if GPI2 is Active.
If both GPIs are inactive then switch to input B if
power on B is above threshold B and power on input
A is below threshold A. Switch back to input A if
power on input A is above threshold A.
Table 5-2: Operating Mode Switch Settings
