Bell Control Technical Data 3700: Difference between revisions

Clock option baud rate for music
Test combo output transistor
 
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Four wires (two twisted pairs) are enough unless AX STATUS mode is used (not implemented at the time of this writing).
Four wires (two twisted pairs) are enough unless AX STATUS mode is used (not implemented at the time of this writing).


# STAT+ (status from the panel to the controller)
# STAT+ (not used)
# STAT-
# STAT-
# 12V+  (used to power the isolated inteface in the controller)
# 12V+  (used to power the isolated inteface in the controller)
# 12V-  (data ground and interface power - NOT EARTH)
# 12V-  (isolated data common and interface power - NOT Earth or cable shield)
# DATA+ (control data from the controller)
# DATA+ (control data from the controller)
# DATA-
# DATA-
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** The voltage drop should be around 0.5 Volts - shorted outputs will be near 0 Volts (and fuse will be blown - do not replace)
** The voltage drop should be around 0.5 Volts - shorted outputs will be near 0 Volts (and fuse will be blown - do not replace)
** Return the module to Chime Master for replacement/rework if any measurement is less than 0.35 Volts
** Return the module to Chime Master for replacement/rework if any measurement is less than 0.35 Volts
=== Combo Module ===
To test the striker output of the Combo module, use the steps above as for the DC Striker Module.
* Hold the red meter probe to the bottom of the striker fuse
* Touch the black meter probe to the middle lead of Q1
** The voltage drop should be around 0.5 Volts - shorted outputs will be near 0 Volts (and fuse will be blown - do not replace)


[[Category:Installation]]
[[Category:Installation]]
[[Category:Troubleshooting]]
[[Category:Troubleshooting]]