3M C960, Service Information

Page: 39 / 158

14
System Configurations and Function Jumper Settings
!
Important
Whenever a jumper setting is changed, the RESET SWITCH on the base station circuit board must be pressed
to program the new jumper setting into the microprocessor. Also, each of the headsets in the system must be
reprogrammed when a jumper setting is changed (see Channel Selection on page 14 for the headset
programming procedure).
Determine the system type (standard operation – single lane, etc.) and identify the type of speaker (speaker only
or speaker and microphone) and the type of vehicle detector (air switch or loop/SODAR detector).
Refer to the base station circuit board illustration (Figure 14) and the applicable system configuration below. Set
the function jumpers as noted and per the type of speaker and vehicle detector in the system. (An illustration of
the circuit board also appears on the decal inside of the base station half–cover.)
Standard Operation – Single Lane System (One Base Station)
Function Jumper Settings
Menu Sign with Speaker only (OSM) Jumper pins 1 and 2 on jumpers J1 and J2.
or or
Menu Sign with Separate Speaker and
Microphone
Jumper pins 2 and 3 on jumpers J1 and J2.
Lane 1 System Jumper pins 1 and 2 of jumper J3.
Air Switch (Pulse) Detector Jumper pins 1 and 2 of jumper J4.
or or
Loop/Sodar (Presence) Detector Jumper pins 2 and 3 of jumper J4.
Standard Operation Jumper pins 2 and 3 of jumper J5.
Menu Power Selection Jumper must cover the top 2 pins of jumper J6.
Talk Monitor Level Jumper left 2 pins of jumper J9.
Standard Operation – Dual Lane System (Two Base Stations)
Function Jumper Settings
Menu Sign with Speaker only (OSM) Jumper pins 1 and 2 on jumpers J1 and J2.
or or
Menu Sign with Separate Speaker and
Microphone Jumper pins 2 and 3 on jumpers J1 and J2.
Lane 1 System Jumper pins 1 and 2 on base station 1, jumper J3.
Lane 2 System Jumper pins 2 and 3 on base station 2, jumper J3.
Air Switch (Pulse) Detector Jumper pins 1 and 2 of jumper J4.
or or
Loop/Sodar (Presence) Detector Jumper pins 2 and 3 of jumper J4.
Standard Operation Jumper pins 2 and 3 of jumper J5.
Menu Power Selection
Jumper must cover the top 2 pins of jumper J6.
Talk Monitor Level Jumper left 2 pins of jumper J9.