Pub. 42004-790B
SP2 Fiber Class I Div. 2 Handset/Speaker Amplifier Station
Page 6 of 24
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Termination PCBA
Install all connections as indicated in the following sections:
Figure 4. SP2 Termination PCBA
(Optional 70V/100V Termination PCBA Similar)
Direct Speaker Connection and Jumper Settings
Terminal block
TB1
provides termination for the station’s 8 or 16-ohm remote speaker(s).
1.
Pull the speaker cable(s) into the enclosure.
2.
Install spade lugs to the wires.
3.
Connect the speaker wires to terminal block
TB1
(see Table 1).
4.
Torque the terminal block screws to 8–10 in·lb (0.90–1.13 N·m).
5.
Configure the speaker jumpers,
P2
and
P3
, for the appropriate impedance for use with 8-ohm or 16-
ohm speakers (see Figure 4 and Figure 5).
A redundant set of terminals enables connection of a second speaker branch connected in series or parallel
with the primary speaker.
