Instruction manual

3-6
1. Connect Audio Appliance Circuit to Audio Output (AUDIO OUT) connection on TB6. See Figure
3-1, Section 6 (Page 3-2) for location. Figure 3-4, above, is an enlarged picture of the referred
area. The Audio Output is supervised. A UL Listed 10K Ohm, ½ W EOLR is required at the end
of the circuit for proper supervision.
2. Select the proper output voltage (25V or 70V) using the Audio Output Select Jumper J4. See
Figure 3-15 (Page 3-15) for location.
Audio Input Connections
The SP40/2 panel has 8 inputs. The highest priority input is the on board push-to-talk Microphone. It
overrides all other audio inputs. Next are the IN1, IN2 and IN3 respectively, followed by Night Ring
(NR), Telephone Page (TEL), and Background Music (BGM). Background Music will be muted when
any other audio input is initiated. Night Ring (NR), Telephone Page (TEL), and Background Music
(BGM) operate only when the panel has 120VAC applied.
Digital Voice Initiating Connections
The Digital Voice Initiating Connections (IN1, IN2, IN3) provide the initiation of the stored messages
in the Digital Voice Section of the SP40/2 panel. Each initiation circuit requires a NAC (9 to 31VDC)
input to trigger the respective voice message. Each Initiating circuit is polarized for compatibility with
standard reverse polarity supervision of circuit wiring. Additional information can be found in Table 3-
1 on Page 3-3.
The Digital Voice Initiating Connections (IN1, IN2, IN3) can also initiate the strobe NAC output circuit.
Using DIP Switch SW2 (Strobe Select Sync/Non-Sync Select), strobes can be initiated by IN1, IN2,
and/or IN3. (See Figure 3-15 on Page 3-15). Positions 1, 2, and 3 control the strobe initiation for
inputs IN1, IN2, and IN3 respectively. Positioned in the ON or up position causes the strobes to
operate during message playback. Position 4 (OFF) selects the Wheelock Sync Mode.
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TB4
IN3
IN2
IN1
Section 4
Internal Digital Voice
Module Input Connections
Figure 3-5
Digital Voice Initiating Connections
While observing correct polarity, connect the Digital Voice Initiating connections (IN1, IN2, IN3) to the
connections on TB4 as desired. Connect FACP EOLR across desired IN1 through IN3. See Figure 3-
1, Section 4 on Page 3-2 for location. Figure 3-5, on Page 3-6, is an enlarged picture of the referred
area.
Ancillary Audio Input Connections
The SP40/2 panel has three ancillary audio inputs. Listed in order of priority, they are Night Ring
(NR), Telephone Page (TEL), and Background Music (BGM). These inputs will not operate when
the SP40/2 is in the alarm condition or when the input voltage (120VAC) is not applied and the
SP40/2 is on battery backup. These inputs are not supervised. The Telephone Page input requires
input from a Telephone Page Port. The Night Ring input requires a dry contact closure. The
Background Music input requires a line level, 600 Ohm, 1Vrms signal.