U9921-GUV (P/N: 40994G-01) Universal Gateway USER MANUAL 19541P‐42 (02‐11) ©2011 DAVID CLARK COMPANY INCORPORATED
Cautions and Warnings READ AND SAVE THESE INSTRUCTIONS. Follow the instructions in this installation manual. These instructions must be followed to avoid damage to this product and associated equipment. Product operation and reliability depends on proper usage. DO NOT INSTALL ANY DAVID CLARK COMPANY PRODUCT THAT APPEARS DAMAGED. Upon unpacking your David Clark product, inspect the contents for shipping damage.
Overview The U9921‐GUV (40994G‐01) Universal Gateway is a fixed‐mounted wireless communication device that, when used in conjunction with one or more U9910‐BSW (40992G‐01) or U9912‐ BSW (40992G‐02) Wireless Belt Stations, becomes part of a wireless intercom system. The U9921‐GUV provides communication for up to four users as well as an interface to an existing wired intercom system. Up to four belt stations can be connected to one gateway.
Installation Intercom Interface The U9921‐GUV is designed to add wireless capability to an existing wired intercom. Connection to the intercom is accomplished by connecting an interface cable to the interface connector of the U9921‐GUV (see Figure 1). The following list contains David Clark intercom systems that have been tested to work with the U9921‐GUV and the required cable assembly.
Linking Before a belt station and a gateway can be connected, they must first be linked. As a security measure, the close‐link feature requires devices to be in proximity of between 1 to 3 ft (0.3 to 0.9m) in order to successfully link. This ensures that the units are not inadvertently linked with other units on the premises. Linking procedure: 1. Ensure units are within 1 to 3 ft (0.3 to 0.9m) of each other. 2.
Operation Communication All connected belt stations will be able to communicate with each other through the U9921‐GUV while in range (and per the VOX settings on a VOX belt station.) Additionally, all belt station users will have communication over the intercom. If the intercom is so equipped, pressing the PTT button on a VOX belt station will allow the user to transmit over the system’s two‐way radio. Pressing the PTT overrides the VOX setting on a VOX belt station.
Purging In some circumstances it may be necessary to “purge” the U9921‐GUV of some of its linked belt stations. Typically purging is not necessary unless there are multiple gateways in the same vicinity and you wish to remove a belt station from this gateway and link to a different gateway. A gateway can link up to six belt stations where a belt station can be linked to only one gateway at a time.
Replacement Parts • Interface cable assemblies: David Clark Intercom U3800 Vehicular Intercom System U9800 Marine Intercom System U9500 Marine Intercom System U3400 Portable Intercom System U3100 Modular Intercom System • • Cable Assembly Required C99‐22MS (40935G‐08) C99‐20CX (40935G‐07) C99‐20LL (40935G‐06) C99‐20MS (40935G‐05) Whip Antenna (P/N: 40688G‐92) Remote Antenna Kit (P/N: 40688G‐93) Care and Maintenance The U9921‐GUV is not user serviceable. Do not attempt to open the enclosure.
FCC Part 15 Statement RADIO AND TELEVISION INTERFERENCE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
