Simplex 4100ES Installation Manual page 100

5. All wiring that leaves the building requires the 2081-9044 Overvoltage Protector at each entry or exit to the building. A maximum
of four overvoltage protectors are allowed. Each 2081-9044 adds 6 Ohms and 0.006 uF.
6. Wiring must be free of all grounds.
7. Maximum number of digital interface cards per digital audio riser: 31.
8. All riser wiring is supervised and power-limited.
9. Audio wiring is not to be mixed in the same jacket with other wiring (including other audio wiring).
10. In applications where no Digital Audio Controller is connected to the field wiring (such as a synchronized audio application or a
non-synchronized application with multiple network microphone s), all DAR interface cards are wired secondary to primary.
7.6.6 Distributed Microphone Interconnections
A Distributed Microphone is used between audio nodes in a network system where each node has its own local audio (its own Digital
Audio Controller) but needs to be able to play the microphone channel from a separate node's Digital Audio Controller.
For a distributed microphone application, the 4100-0622 Digital Riser Interface (566-407, -1000) has a single digital to analog converter
that can be set to convert any single channel of the Digital Audio Riser (DAR) stream to analog. This analog output is connected to a second
Digital Audio Controller's remote microphone input or to the microphone input of a 4100-1240 Input Option Card (566-037). DIP switches
configure the channel selection and density.
Figure 63 is an illustration of the distributed microphone application wiring. Refer to the Switches and Indicators section for switch settings
to configure the distributed microphone channel output.
Figure Notes:
1. Leave the 4.7 K, ½ W resistors (378-056; yellow/violet/red) on the "+" to "-" terminals of unused contacts.
2. All wiring is 18 AWG to 14 AWG, twisted-shielded pair.
3. Audio wiring is not to be mixed in the same jacket with other wiring (including other audio wiring).
4. AC voltage rating: 10 VRMS (maximum)
5. DC voltage rating: 1 VDC (maximum)
6. Maximum number of analog interface cards per audio riser: 31.
7. All wiring that leaves the building requires the 2081-9044 Overvoltage Protector at each entry or exit to the building.
8. Maximum wire distance: 10,000 feet (3,048 meters).
9. Wiring must be free of all grounds.
10. Set audio input card jumpers as shown in Aux Audio Input Module Installation Instructions 579-160.
11. All riser wiring is supervised and power-limited.
page 98
4100ES Fire Alarm System Installation Guide
574-848 Rev. BQ