Firecom 5000D Series Installation & Operation Manual page 10

• Modules should be positioned so that the routing the CA cables to the modules is neat, orderly, and away from
radio coaxial cable.
• The module placement should provide access to the jacks on the module for the CA cables. The CA cable from
the Digital Intercom will be inserted into the jack beneath the label on the headset module.
When connecting the two headset modules via a daisy-chain, allow clearance on the side opposite the HM-10
•
label for the CA cable to be routed to the second headset module (Figure 6).
The second type of module is the PP-20 which is a water and corrosion-resistant module for use on the exterior of the
apparatus (e.g. the pump panel, the tail-board, etc.).
The Wireless Base Station is designed for communications between the headsets and/or belt packs, and Intercom and
radio. It is designed for use inside the apparatus where it is protected from the elements.
HM-10
DAISY-CHAINING THE HEADSET MODULES
Daisy-Chaining the Headset Modules is a method used to increase the number of headset positions available, or a
method of reducing the number of cable runs and the length of the cable runs. Daisy-Chaining the Headset modules is
easy to accomplish, but must be well thought out in advance considering the following requirements:
• The Headset Modules in a Daisy-Chain must be connected in a SPECIFIC manner (Figure 6).
The CA cable from the Intercom unit should ALWAYS be plugged into the Headset module via the modular jack.
•
The modular jack on the other end of the Headset Module (behind a removable plastic tab), is for the CA Cable
•
which leads to the next Headset Module in the Daisy-Chain.
• DO NOT mix headset types (Intercom-Only vs. Radio-Transmit) that are plugged into a Daisy-Chain.
• A maximum of 2 Intercom-Only Headsets may be plugged into a Daisy-Chain at any time.
You may have more Headset Modules in the Daisy-Chain, but NEVER plug more than 2 Intercom-Only Headsets
•
into the Daisy-Chain at any one time.
IMPORTANT: Improper Daisy-Chains in a system may result in operational problems and reduced system performance.
If you have any questions regarding Daisy-Chains, contact your local Firecom Dealer for more information.
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PP-20
Figure 5
Figure 6
Base Station