Shot Clock: How to isolate the shot clock horn from the game clock horn (with relay card)

Topic

How to remove, stop, or prevent the shot clock from sounding on the game horn?
Is there a way to keep the shot clock horn from sounding when the game clock horn sounds? (e.g. when buzzing in players for a substitution).
Is there a way to make the shot clock horn only sound when the shot clock time reaches zero?
Is there a way to stop the shot clock horn from sounding when the manual horn button is pressed on the All Sport Console?
Small Venue; it is too loud when Shot Clock and Scoreboard horns sound at the same time.
The shot clock does have a relay card and horn card.
If the shot clock does not have a relay card or horn card see KB: Shot Clock: How to isolate the shot clock horn from the game clock horn (without relay card)

Environment

Product: Shot Clock; examples BB-2115, BB-2109
Component:
Control System: All Sport 5000

Steps

Determine if your shot clock is wired like Option A or Option B?
1. Option A; example DWG-01045024
  1. Grey wire from A4 Horn Suppression Card P2/J2-1 wires to A3 Relay Card at TB1-3. This wiring will be the difference.
  2. Grey wire jumper on A3 Relay Card between TB1-2 and TB1-3. This wiring will be the same on both options.
2. Option B; example DWG-00202716
  1. Grey wire from A4 Horn Suppression Card P2/J2-1 wires to A3 Relay Card at TB1-2. This wiring will be the difference.
  2. Grey wire jumper on A3 Relay Card between TB1-2 and TB1-3. This wiring will be the same on both options.
Option A&B; Apply this step for both wiring options:
1. Remove the grey jumper on A3 Relay Card between TB1-2 and TB1-3 which shorts the game clock (pink wire) and shot clock (blue wire) together.
Option B; this additional step is only required for Option B wiring:
1. Move the other grey wire (mentioned in step 1-2-1 above) from TB1-2 to TB1-3.
Verify horn change:
1. Only the Game Clock Horn sounds when:
  1. Pressing the manual horn button on the All Sport.
  2. Main Game Clock counts down to zero.
2. Only the Shot Clock Horn sounds when:
  1. Shot Clock counts down to zero.

Note 1: The dip switches on the A3 Relay Card have no effect on when the horn sounds, but only affect visual/light strip activation (TB3 & TB4).
Note 2: When the manual horn button is pressed, only the game clock bit (J7-5) is triggered, J7-4 is not.

J7-4 = shot clock horn bit = segment F, blue wire
J7-5 = game clock horn bit = segment E, pink wire

KB ID: 000027946

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