USER MANUAL 3800 Gateway U9922-G38 (P/N: 40995G-01) 19541P-43 (03-12) 2012 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 U9922-G38 (40995G-01) 3800 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 U9922G38 provides communication for up to four users as well as an interface to an existing David Clark Model 3800 wired intercom system. Additionally, the U9922-G38 can be used as a standalone wireless intercom gateway with two-way radio interface.
Installation Intercom Interface The U9922-G38 can be configured in one of two ways: 3800 interface and stand-alone. 3800 Interface This configuration adds wireless capability to an existing 3800 wired intercom system and can replace a U3811 or U3815 radio interface module (see 3800 system documentation for further details.) In this way, all wired and wireless users may communicate with each other as well as talk over and listen to a two-way radio.
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 about 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 U9922-G38 while in range (and per the VOX settings on each VOX belt station.) Additionally, all belt station users will have communication over the intercom. If a two-way radio is installed to the U9922G38, 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.
Radio Transmit Level Adjustment Procedure Note: A radio service monitor is recommended for this adjustment. 1. Connect at least one belt station to the U9922-G38 gateway and ensure sidetone is present (see belt station User Manual). 2. Open the cover of the U9922-G38 and find the large silver knob. 3. Press and hold the PTT and speak clearly and loudly into the microphone. 4. Slowly turn the knob until the radio service monitor reads 4.0-4.5kHz deviation. a.
Smart Purge A smart purge is the purge method employed for the U9922-G38, in which only unwanted links are removed from the gateway. When this procedure is complete, only belt stations that are connected to the gateway remain linked. All other belt station links will have been removed (see the belt station User Manual for the individual belt station purging procedure when remaining link purging may be necessary.) Smart Purge procedure 1. Ensure gateway is powered on and functioning. 2.
Care and Maintenance The U9922-G38 is not user serviceable. Do not attempt to open the enclosure (unless adjusting the radio level per the procedures noted in this manual.) If this product requires service, please contact the David Clark Customer Service department: • Phone: 800.298.6235 • E-Mail: serviceWWW@DavidClark.com • By Mail: Customer Service David Clark Company 360 Franklin Street Worcester, MA 01604 If necessary, the U9922-G38 may be wiped down with a mild soap and water mixture.
- Reorient or relocate the receiving antenna. - Increase the separation between the equipment and the receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. You may also find helpful the following booklet, prepared by the FCC: "How to Identify and Resolve Radio-TV Interference Problems." This booklet is available from the U.S. Government Printing Office, Washington D.C. 20402.
