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JUMPERS and CONTROLS
J1
INT
A
EXT
B
Speaker
J2
Test
Direct
J3
J4
A
B
J5
Pitch control
ON/OFF
slide switch
Jumper J1 (Speaker) is used to select either internal or external speaker
operation. The default setting is for the Internal speaker with the link bridging the
top two pins (position A). If an external speaker is used, the link must be moved
so that it bridges the bottom two pins (position B).
Jumper J2 (Direct) is used only if the tone-ringer is operated by a DC source
(instead of the normal AC ring voltage). The default setting is for an AC ring
supply (link open). If a DC source is used, the two pins on jumper J2 must be
bridged.
Jumper J3 (Speaker) is used to connect the Internal Speaker that is mounted in the
front-cover of the tone-ringer to the PCB. Check that the speaker wires are plugged
into this link-block before replacing the cover on to tone-ringer.
Jumper J4 is used to select either "normal" or "reduced tinkle" operation. The
default setting is "normal" with the link bridging the bottom two pins (position B).
If "reduced tinkle" operation is required the link must be moved so that it bridges
the top two pins (position A). The "normal" position is used for the majority of
installations.
Jumper J5 (Hytel) is not used.
These three controls are accessible from outside the tone-
ringer and give the end-user control over basic functions.
The pitch control varies the pitch of the tone-ringer's signal.
The ON/OFF slide switch is used to activate or silence the
tone ringer. Slide the switch down to the bottom position to
activate the tone-ringer or up to the top position to prevent
the tone-ringer from operating.
The volume control is used to set the loudness of the tone
ringer's speaker (either internal or external). Turning the
Volume
control clockwise (towards the right) increases the volume of
control
the speaker. Turning the control anti-clockwise (towards the
left) decreases the speaker's volume.
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