Technical data

Chapter 4: Installation

allows for pass-through of the synchronized NAC Circuit on the RET connections. When connected with an

SPB-80/4, strobe compatibility is system-wide.

Section 11

Strobe Connections

Figure 4-4 Strobe Connections

1. Connect the Strobe Appliance Circuit to the Strobe output STB OUT connection on TB12. Observe

correct polarity. See Figure 4-1 for TB12’s location. Figure 4-4 is an enlarged picture of the referred

area. The Strobe Appliance Output Circuit is supervised. A UL Listed 10K Ohm, ½ W EOLR is required

at the end of the circuit for proper supervision.

NOTE: The strobe output circuit can be activated four ways: (1) If the strobe output is to be activated during a

live PTT MIC page, turn ON SW3-position 9. (2) If the strobe output is to be activated during an AUX activation,

turn ON SW3-position 10. (3) If the strobe output is to be activated when one or all the digital voice messages

are initiated, operate DIP switch SW9 as explained in Section 3.7.1. (4) The fourth way is to connect a NAC

circuit input from an FACP to STB IN as described below.

2. Connect Strobe Circuit input (8 to 33VDC) from the FACP or other UL Listed control panels to the

Strobe Input circuit (STB IN) connection on TB11. Observe correct polarity. The maximum line

impedance of the strobe circuits is 40 ohms.

3. Connect the FACP EOLR, additional appliances or additional SP40S panels to RET connection on

TB11.

• The Digital Voice Initiating Connections (IN1, IN2, IN3, IN4, IN5, IN6, IN7, and IN8) can also initiate

the strobe output circuit. Strobes can be initiated by the MIC, AUX, IN1, IN2, IN3, IN4, IN5, IN6, IN7,

and IN8.

• Positions 1, 2, 3, 4, 5, 6, 7, and 8 of SW3 control the strobe initiation for inputs IN1, IN2, IN3, IN4, IN5,

IN6, IN7, and IN8, respectively. If positioned in the ON or UP position, the strobes operate during

message playback.

• Position 9 of SW3 in the ON position initiates the strobe circuit during a PTT MIC live announcement.

• Position 10 of SW3 in the ON position initiates the strobe circuit during an AUX activation.

• Position 2 (ON) of SW9 selects the Wheelock Sync Mode during an alarm strobe activation.

4.4.5 Installing Audio Output Connections

1. Connect the Audio Appliance Circuit to the Audio Output (AUDIO OUT) connection on TB4. See

Figure 4-1 for TB4’s location. Figure 4-5 is an enlarged picture of the referred area. The Audio Output is

SP40S Multi-Function Facility Communication System Manual, Revision D