User manual TELEX AUDIOCOM SS-2002 RM TECHNICAL MANUAL REV D

[. . . ] Model SS-1002 Single-Channel Intercom Speaker Station Models SS-2002 Two-Channel Intercom Speaker Station Model SS-2002 RM Two-Channel Rack Mount Intercom Speaker Station Technical Manual 9350-7741-000 Rev D 05/2009 PROPRIETARY NOTICE The product information and design disclosed herein were originated by and are the property of Bosch Security Systems, Inc. Bosch reserves all patent, proprietary design, manufacturing, reproduction, use and sales rights thereto, and to any article disclosed therein, except to the extent rights are expressly granted to others. Shipping to the Manufacturer All shipments of product should be made via UPS Ground, prepaid (you may request from Factory Service a different shipment method). Any shipment upgrades will be paid by the customer. The equipment should be shipped in the original packing carton. [. . . ] See "Sidetone Adjustment" on page 15. FIGURE 3. DIP Switch location RM version (left), SIP switch location S, U, and P Versions (right). Headset Connector Notes If you are using a monaural, dynamic-mic headset, or a monaural, telephone-style, dynamic-mic hands-free, or a handheld dynamic microphone, plug it into the headset connector. You can also use this connector with monaural headphones for listening when you are using either the built-in panel microphone or the optional gooseneck microphone for talk back. Panel Mic Connector Notes As an alternative to a headset or telephone style handset, you can use either the built-in panel microphone or an optional gooseneck microphone. To connect a Telex MCP-90 gooseneck microphone, do the following: 1. 2. Insert the 1/4" RTS connector into the panel microphone connector. Screw the microphone in. 9 When a gooseneck microphone is inserted in the panel microphone connector, the built-in panel microphone is automatically bypassed. Use either of these microphones for talk back, then use the internal speaker for listening, or connect a pair of headphones to the headset connector for private listening. Intercom Channel Connections The method of connection depends on the type of box. The S box, P box, and RM versions connect to the intercom system using pre-fabricated cables in a phantom powered configuration. The U box version is designed for permanent installation, and it can be either phantom powered or locally powered. Description of Phantom-Powered Connection In phantom-powered connections the operating power and intercom audio for the entire system are carried over the same wires. The advantage of this method is simplicity of connection. The system power supply (PS-2001L, SPS-2001A, etc. ) automatically provides what is known as a terminating impedance for the intercom system. Without this terminating impedance, the sound quality becomes distorted, and the levels shift every time additional stations are connected. The disadvantage of the phantom power method is some operating power is lost over very long intercom cable runs, and performance at distant intercom station may be reduced. Generally, if intercom stations are within a few hundred feet from the system power supply, phantom power is sufficient. Also, increasing the number of stations reduces the overall operating distance. Phantom-power is generally the only method used to connect the S box, P box, and RM versions. Figure 4 illustrates a phantom-power intercom system. NOTE: The distance over which power can be delivered is less than the distance over which audio can be delivered. Audio can be delivered for several miles to locally powered stations as described below. FIGURE 4. Phantom Powered Example Example: Figure 4 is an example of a phantom-powered system. In this system, a PS-2001L power supply is set to isolate mode. Each channel is a separate party line and current per channel is limited to 1Amp. Both single and two-channel intercom stations may be connected by using Y cables (or JB2 Junction boxes). Pre-fabricated cables may be used, or cables may be constructed using the diagrams in Figure 10 on page 14. 10 Description of Locally Powered Connection Using a Locally Powered Connection, an intercom station is connected to the intercom line just like any phantom powered intercom station, except a local power supply is also connected. [. . . ] Set the volume control to the normal listening level for intercom audio. While talking into the microphone, use a small, flat-head screwdriver to adjust the channel 1 sidetone trimmer so you can hear your own voice in the headphones at an acceptable level. Repeat the steps 1 - 5 to adjust the channel 2 sidetone. Channel Select (SS-2002 & SS-2002RM Only) To select a channel on the SS-2002 and SS2002RM, do the following: > Tap the Ch Select key to select channel 1 or 2. The key is green when channel 1 is selected and red when channel 2 is selected. Headset/Headphone/Speaker/Microphone Selection · · To use a headset or telephone style handset: set the Speaker and Panel Mic keys to off. To use headphones with the built-in panel microphone: set the speaker key to off. [. . . ]