U9922-G38 (P/N: 40995G-01) 3800 Gateway USER MANUAL ©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 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 U9922‐ G38 provides communication for up to four users as well as an interface to an existing David Clark Model 3800 wired intercom system.
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 U9922‐ G38, 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 procedure 1. Ensure gateway is powered on and functioning. 2. Disconnect all belt stations to be purged (power off the belt stations). 3. Verify the number of green LED flashes on the gateway matches the number of belt stations to be kept linked. 4. Press and hold LINK button on the gateway for 30 seconds until LED quickly flashes red. 5. Release LINK button.
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.
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.
