USER MANUAL Push Back Gateway U9920-GPB (P/N: 40993G-01)
Contents
1. SW Wireless Belt Stations provides communication for up to four users as well as an interface to an aircraft intercom system Only one gateway is required per system Up to four belt stations can be connected to one gateway Aircraft Connector Power Button Status LED Banner Battery Compartment Battery Release Screw Figure 1 Overview of Gateway 2 of 9 19541P 41 06 12 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 2 3 Ensure power is on for both U9920 GPB and belt station see Power up Power down Ensure units are within 1 to 3 ft 0 3 to 0 9m of each other Simultaneously within 1 2 sec press and release the PTT button on the U9920 GPB and the belt station to link with Amber LED s will flash on both devices A momentary red LED indicates a successful close link Upon successful link the U9920 GPB will attempt to establish a connection with the belt station Upon successfully establishing connection the LED on the gateway will flash a green pattern corresponding to the number of belt stations connected Once linked the devices will not need to be linked again unless they are purged s2. SW users can communicate to the pilot of the aircraft by pressing the PTT button on the belt station A Push Back Cable is required between the U9920 GPB and the aircraft see below Figure 2 connection illustration and Table 2 Push Back Cable matrix Line up Orange Dots and Twist Figure 2 Push Back Cable Connection Table 2 Push Back Gateway Interface Cable Matrix Part Number Configuration 41035G 02 PJ 051 Plug 1 4 41035G 03 U 174 U Plug Civilian Only 41035G 04 Dual G A Plugs PJ 055 PJ 068 41035G 05 U 174 U Plug Military Only The included lanyard hook and Remove Before Flight banner see Figure 1 facilitate the temporary mounting of the U9920 GPB to an aircraft The hook position on the lanyard is adjustable to accommodate a variety of different mounting techniques In addition the belt clip can be used to clip the gateway to an access door Care and judgment should be exercised when clipping or hooking to any part of the aircraft so that damage does not occur to the aircraft or the gateway 4 of 9 19541P 41 06 12 If possible orient the gateway in such a way that it is as far away from any metal parts as possible This will increase the wireless range and robustness of communications WARNING ALWAYS REMOVE THE GATEWAY AND ALL ASSOCIATED ITEMS FROM THE AIRCRAFT WHEN OPERATIONS ARE COMPLETE Aircraft Level Adjustment Audio levels can vary between aircraft To co
3. Statement This device complies with Industry Canada license exempt RSS standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired operation of the device Unauthorized Changes Changes or modifications not expressly approved by David Clark Company Inc could void the users authority to operate the equipment Usage Restrictions Due to the UPCS frequencies used this product is licensed for operation only in the United States of America and Canada 9 of 9 19541P 41 06 12
4. WWW DAVIDCLARK COM USER MANUAL Push Back Gateway U9920 GPB P N 40993G 01 19541P 41 06 12 2012 DAVID CLARK COMPANY INCORPORATED Cautions and Warnings 19541P 41 06 12 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 N H x DO NOT INSTALL ANY DAVID CLARK COMPANY PRODUCT THAT APPEARS DAMAGED Upon unpacking your David Clark product inspect the contents for shipping damage If damage is apparent immediately file a claim with the carrier and notify your David Clark product supplier ELECTRICAL HAZARD Disconnect electrical power when making any internal adjustments or repairs All repairs should be performed by a representative or authorized agent of the David Clark Company STATIC HAZARD Static electricity can damage components Therefore be sure to ground yourself before opening or installing components LI POLYMER This product is used with Li Polymer batteries Do not incinerate disassemble short circuit or expose the battery to high temperatures Battery must be disposed of properly in accordance with local regulations 1 of 9 Overview The U9920 GPB 40993G 01 Push Back Gateway is a portable wireless communication device that when used in conjunction with one or more U9910 BSW 40992G 01 or U9912 B
5. ee Purging Each belt station is able to be linked to only one gateway at atime A gateway can have up to six belt stations linked and be connected to four of those six at one time Status Indications The power button has a multi color LED in the center which serves as a status indication for the gateway Table 1 below lists these states Table 1 LED Status Indications LED Color Blink Rate Status Red Solid Initializing power up Red Once Connection Dropped Red Once Connection Established Red Any Low battery approx 1 hr remaining Orange Slow Idle Disconnected Orange Fast Link Connection in Progress Orange Solid PTT asserted Green Slow Connected pattern indicates number of belt stations connected 19541P 41 06 12 3 0f 9 Operation Power Up Power Down To power up the U9920 GPB Push Back Gateway press and hold the POWER button for approximately two seconds The LED will turn red and then begin flashing orange If there are linked belt stations within range they will automatically connect to the gateway in a few seconds after power up To power down the U9920 GPB press and hold the POWER button for approximately two seconds The LED will turn red and then turn off The gateway is now powered down Aircraft Interface e The U9920 GPB is designed for airport push back operations and can be connected to an aircraft intercom system Once connected up to four belt station U9910 B
6. igital 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 However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures 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 In order to maintain compliance with FCC regulations shielded cables must be used with this equipment Operation with non approved equipment or unshielded cables is likely to result in interference to radio amp television reception Industry Canada
7. ilian Only P N 41035G 03 Aircraft Interface Cord dual General Aviation plugs Saab others P N 41035G 04 Aircraft Interface Cord U 174 U Plug Military Only P N 41035G 05 Care and Maintenance The U9920 GPB is not user serviceable Do not attempt to open the enclosure If this product requires service please contact the David Clark Co Inc Customer Service department e Phone 800 298 6235 e E Mail serviceWWW DavidClark com e ByMail Customer Service David Clark Company 360 Franklin Street Worcester MA 01604 If necessary the U9920 GPB may be wiped down with a mild soap and water mixture Although it is asealed device designed to withstand submersion in water to 1 meter do not unnecessarily submerse this product in water Avoid storage of this product in direct sunlight or high temperature environments Specifications Frequency Range 1920 MHz 1930 MHz U S and Canada Average RF Power Output 4 mW 100mW peak U S and Canada Range 300 ft 100m line of sight nominal Battery Life 24 hrs continuous use nominal Operating Temperature 14 F to 113 F 10 C to 45 C Storage Temperature 4 F to 140 F 20 C to 60 C Power Requirements 3 7V 100mA nominal Battery Type 3 7V 2000mAh Li Polymer 8 of 9 19541P 41 06 12 FCC Part 15 Statement RADIO AND TELEVISION INTERFERENCE This equipment has been tested and found to comply with the limits for a Class B d
8. mpensate for this the U9920 GPB has a receive level adjust knob see Figure 1 Turning this knob will increase or decrease the audio level coming from the aircraft and into the wireless intercom By adjusting this knob optimum performance can be achieved Receive Level Adjustment Procedure 1 Connect at least one belt station to the U9920 GPB gateway and ensure sidetone is present see belt station User Manual 2 Press and hold PTT 3 While holding PTT begin speaking and slowly turn Receive Level Adjust knob on the U9920 GPB gateway clockwise until you hear an echo of your own voice 4 Turn the Receive Level Adjust knob slightly counter clockwise until the echo stops 5 Release PTT 6 You may wish to verify communication with the pilot or someone hard wired to the aircraft s intercom Communication Note It is highly recommended for wireless push back systems that each headset user interface through a non VOX belt station U9912 BSW as extremely high and varying noise levels within this environment can become challenging to the VOX feature resulting in unwanted ramp noise being present in a VOX belt station user s headset and causing him her to frequently adjust the VOX setting VOX belt stations may be desired in more stable and less extreme noise environments All connected belt stations will be able to communicate with each other through the U9920 GPB while in range Additionally all belt station users will always hear an
9. re 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 Battery Removal amp Charging All David Clark 9900 series wireless belt stations and battery operated controllers gateways use a 3 7V Li Polymer rechargeable battery This battery is removed by loosening the battery release screw See Figure 1 The batteries are charged with the A99 04CRG 4 bay battery charger 41034G 01 When installing a battery take care to align the battery properly and fully tighten the screw see Figure 3 Insert Battery with Contacts Down Figure 3 Battery Insertion Removal Troubleshooting Table 3 Troubleshooting Problem Solution Gateway will not turn on Review Power up Power down procedure Ensure a fresh battery is installed Cannot link a belt station Review Registration procedure Ensure units are within 1 to 3ft 0 3 to 0 9m of each other Try a Full Purge Cannot speak to aircraft PTT not pressed 7 of 9 19541P 41 06 12 Replacement Parts Battery P N 40688G 90 Protective skin orange A99 02SKN P N 40796G 03 Aircraft Interface Cord PJ 051 1 4 plug P N 41035G 02 Aircraft Interface Cord U 174 U plug Civ
10. s point approximately 1 hour of operation remains Auto Shut Off The U9920 GPB will automatically shut off 30 minutes after the last belt station is disconnected Purging In some circumstances it may be necessary to purge the U9920 GPB 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 atime Full Purge A full purge is a purge method which clears all links in the gateway After this procedure no belt stations will automatically connect to this gateway until linked Full Purge procedure 1 Power down gateway see Power up Power down Press and hold PTT button Do not release Power up the gateway see Power up Power down Release POWER button Release PTT button Status LED will flash red to indicate successful purge An PWN Smart Purge A smart purge is a purge 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 6 of 9 19541P 41 06 12 Smart Purge procedure 1 Ensu
11. y traffic on the aircraft intercom To speak over the aircraft intercom the belt station user must press and hold his her PTT button Multiple belt station users may PTT and thus speak over the aircraft intercom simultaneously Wireless intercom for all connected belt station users is also achieved in this manner For more information consult the user manual for the belt station Range The range of a belt station and a gateway can be up to 300 ft 100m If you are in an environment with metal or concrete walls this range could be reduced If the belt station enters into a fringe reception area a brief sequence of three beeps will be heard in the headset This is to serve as a warning of a possible disconnection if conditions are not improved When possible the user should attempt to regain line of sight contact with the controller 5 of 9 19541P 41 06 12 When the belt station travels out of range of the gateway a voice alert will indicate that the connection has been lost To reconnect simply move back into range and connection with the gateway will automatically be reestablished also noted by a voice alert Low Battery Under typical conditions the battery in the gateway will last up to 24 hours or longer The Status LED turns red to indicate that the battery is running low Additionally a voice alert Gateway Low Battery is transmitted to all connected belt stations This alert is not heard by the pilot of the aircraft At thi
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