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+ ( | # 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 | # 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]] | ||