User Manual WS 19
Contents
1. INTERCOM WS 19 SINGLE CHANNEL WIRELESS BELTPACK USER MANUAL Issue March 2011 ASL Intercom BV DESIGNED AND MANUFACTURED BY ASL INTERCOM BV ZONNEBAAN 42 3542 EG UTRECHT THE NETHERLANDS PHONE 31 0 30 2411901 FAX 31 0 30 2667373 WEB www asl inter com E MAIL info asl inter com CONTENT OF THIS USER MANUAL 1 0 nn nen 3 2 0 INAC SN sad 3 3 0 INS ALE TION ci ER maaweunastnemunaniaacanantuemeneeieencnesvenncuseierncsae 3 4 0 PENI PAINE ts OMIA 4 9 0 SIDE PANEL nn 4 6 0 REAR PANEL CONTROLS CONNECTOR 9 7 0 DAN _ ___ _____ 6_6_ 6 _ 6_ 5 8 0 FREQUENCY BAND amp 5 6 9 0 SETTING UP CONNECTIONS 6 10 0 COMMUNICA HON MODE S raid sad rn 9 WARRANTY _________ 10 120 TEGHNIGAL SPEGIFICA TIONS 10 2 User Manual WS 19 March 2011 ASL Intercom BV 1 0 INTRODUCTION An ASL wireless intercom system may consist of 1 channel beltpacks WS 19 2 channel beltpacks WS 29 2 channel base stations WS 200 and 4 channel base stations WS 400 It is a stand alone system but may also be the wireless extension of a wired intercom system The base stations have a built in interface to 4 wire and to 2 wire party line intercom The WS 19 is a single channel w2. only the by ASL supplied battery charger Never try to use any other adapter or charger unit 14 HEADSET connector To this XLR 4 connector a headset can be connected The headset can must have an impedance of minimum 200 ohms If there are 2 cans in parallel each can must have an impedance of minimum 400 ohms The headset mic may be dynamic or electret 16 Battery Compartment This compartment holds 6 penlight batteries of the AA type The supplied batteries are to be preferred for maximum duration The WS 19 uses a high discharge current which the batteries need to sustain over their lifespan Batteries which only supply a high current for a short time will be exhausted very quickly When the batteries reach the end of their capacity the beltpack gives a warning signal 4 tones The interval of the tones shorten when the batteries wear out Dipswitch to set function Talk function only momentary Talk function disabled Buzzer function disabled Battery save mode transmit power decreases To turn on a switch slide towards side panel 7 2 1 8 PAGE 5 User Manual WS 19 March 2011 ASL Intercom BV 8 0 FREQUENCY BAND amp ANTENNA S 8 1 Frequencies ASL s wireless intercom uses the 2 4 GHz band which is freely available for WLAN Wireless Local Area Networks The ASL system divides the available bandwidth into 16 overlapping sections 8 of them being used as upload frequency from the beltpac
3. With the Channel Select switch at the rear of the beltpack select the TX RX channel according to the WS 200 or WS 400 setting Connect a headset to the beltpack and insert fully charged batteries When the beltpack is switched on a single short tone should be heard and both LED S on the front panel of the unit flash for half a second This indicates that the beltpack is functioning properly When one pushes the CALL or the TALK button the LED s on the front panel are lit and the green LED of corresponding TX RX module in the base station is lit It proofs the beltpack has connection with the base station Turn down the OWN VOICE Volume trimmer at the side panel of the beltpack counter clockwise Set the volume control of the beltpack at approximately 50 Push the TALK button on the beltpack talk into the microphone and listen to your own voice you might hear a small delay in the signal Adjust the side tone trimmer at the referring TX RX module in the base station so that the level of your own voice is as low as possible Adjust the OWN VOICE trimmer on the beltpack so that the level of your own voice is to your liking ASL WIRELESS CONNECTED TO A 4 WIRE INTERCOM SYSTEM Base Station Settings Give each TX RX module in the base station its own TX RX channel by rotating the Channel select switch Try to avoid TX RX channels to be physically next to each other e g when two WS 400 s are in your wireless sys
4. ed To increase mic gain turn trimmer clockwise To decrease mic gain turn trimmer counter clockwise PAGE 4 User Manual WS 19 March 2011 ASL Intercom BV 6 0 REAR PANEL CONTROLS amp CONNECTOR 10 Antenna This small antenna Is very flexible and non removable For optimum performance keep the antenna clear from obstacles 11 POWER on off switch With this switch the battery power of the WS 19 is switched on and off 12 CHANNEL SELECT switch With this switch the TX RX channel see section 8 is selected on which the beltpack communicates with the base station There is a choice out of 8 TX RX channels The selected TX RX channel must match the selected TX RX channel at one of the TX RX modules in the base station 7 0 INTERIOR le 6 DA 18 18 Service connector For factory service only 13 ASL CHARGER connector To this connector the ASL charger unit is connected On the charger unit two LED s indicate the charging process The red LED is lit during charging the green LED is lit when the batteries are full e Before starting the charging process make sure that the beltpack is switched off see 11 and check whether the batteries inside the beltpack are indeed of the rechargeable NIMh type Trying to charge non rechargeable batteries causes leakage of these batteries resulting in serious and in most cases not repairable damage to the electronics of the beltpack e Use
5. iod of two years from date of shipment to the end user 12 0 TECHNICAL SPECIFICATIONS WS 19 Power Consumption Current at 9 V DC 200 mA quiescent 240 mA signaling 260 mA at max output signaling Mic Pre amp mic impedance 200 ohms gain 40 dB 70 dB presence filter 6 dB at 5 kHz V electret mic 4 5V DC Headphones Driver Amp max load 200 ohms max output level 6 8 Vrms 200 Q max output power 0 23 Wrms 200 The side tone prevents when properly adjusted the microphone signal coming from the talking beltpack to return to the beltpacks The listening beltpacks do not hear the talking beltpack To solve this the side tone trimmer of the concerning TX RX module should be turned down fully counter clockwise But there is a drawback the user of the talking beltpack will hear his own voice with a delay of 24 msec and via the OWN VOICE link in the beltpack no delay The effect of hearing your own voice twice with and without delay can be diminished by turning down the OWN VOICE trimmer The listening beltpacks will not notice the delay Faults arising from misuse unauthorized modifications or accidents are not covered by this warranty lf the unit is faulty it should be sent in it s original packing to the supplier or your local ASL dealer with shipping prepaid A note must be included stating the faults found and a copy of the original suppliers invoice Buzzer ma
6. ireless beltpack housed in a strong aluminum case The unit has a Volume listen level control a TALK anda CALL button with LED indicators and one TX RX send receive module ASL uses the 2 4 GHz frequency band for the communication between its wireless beltpacks and base stations 2 0 UNPACKING The shipping carton contains the parts listed below e The WS 19 e User manual e NiMh rechargeable batteries e Charger lf any are missing contact your dealer 3 0 INSTALLATION The supplied rechargeable batteries are empty insert them in the beltpack and charge them before use For charging instructions see section 6 0 13 The WS 19 is used in an existing or new wireless intercom system The necessary DC voltages are derived from the internal batteries see section 7 0 16 A maximum of 8 full duplex wireless connections can be made simultaneously operated without any interference The unique ASL Call system provides both a flashing red LED and a very distinctive and characteristic sound signal A momentary push makes the red LED flash whilst holding the button for two seconds it will activate the CALL sound signal The volume of the sound signal buzzer be adjusted at the side panel Special attention has been paid to the intelligibility of speech By applying low noise high speed op amps a speech presence filter and a specially developed amplifier communication is very comfortable even in env
7. ironments with a very high background noise level ASL has taken great care to ensure this product reaches you in flawless condition After unpacking the unit please inspect for any physical damage Retain the shipping carton and relevant packing materials in case the unit needs to be returned If any damage has occurred please notify your dealer immediately so that a written claim can be initiated Please also refer to the warranty section of this manual Adjust the channel select switch to match the selected channel on the installed base station a WS 200 or a WS 400 After switching on the WS 19 with the power switch at the rear panel the unit should have contact with the base station To check this push a CALL or TALK button The green LED RX active and the red LED 1 ch Beltpack of the corresponding TX RX module the base station should now be lit See also section 9 0 Setting up Connections and section 10 0 Communication Modes PAGE 3 User Manual WS 19 March 2011 ASL Intercom BV 4 0 FRONT PANEL CONTROLS 1 VOLUME control knob This knob adjusts the listen level for the headset 2 TALK button This push button activates the headset microphone the green Talk LED indicates the microphone is switched on One talks to the wired and wireless intercom stations which are connected to this beltpack see section 9 9 0 SIDE PANEL TRIMMERS 6 TONE VOLUME trimmer Thi
8. k to the base station and the other 8 being used as download frequency from the base station to the beltpack With the channel select switches on both base stations and wireless beltpacks one actually selects an upload download pair called a TX RX channel Each TX RX channel serves one dedicated wireless connection between base stations and wireless beltpacks in fact between the TX RX modules in those units It is possible to have several WS 19 beltpacks on the same TX RX channel see section 10 2 Half Duplex When using the ASL wireless system the following should be taken into account o The 2 4 GHz frequency is known to have difficulty in penetrating concrete walls steel walls and other obstructions Behind obstructions like these an HF shadow may occur where no communication is possible 9 0 SETTING UP CONNECTIONS antenna s of a base station should have as much as possible a line of sight to the antenna s of the beltpack s All objects within that path make the connection less reliable Due to reflections of the HF signal one might experience a dropout on a specific spot in a building moving a beltpack only a few inches can be enough to solve the problem o Because of the use of the WLAN frequencies ASL s wireless units might experience interference from units like mobile telephones with bluetooth and computers with bluetooth or WLAN cards Try to change TX RX channels if you ex
9. line 3 Example 3 When two WS 400 base stations are installed and 8x WS 29 beltpacks are available The drawing shows how to connect the channels A of WS 29 1 2 3 and 4 to party line 1 the channels B of WS 29 1 2 3 and 4 to party line 2 the channels A of WS 29 5 6 7 and 8 to party line 3 and the channels B of WS 29 5 6 7 and 8 to party line 4 WS 19 WS 19 PPP PhP PE Party line Party line 1 2 Party line 2 Party line 4 For more information about the audio routing when WS 29 beltpacks are used see the WS 200 or WS 400 user manual section Automatic Audio Routing 10 0 COMMUNICATION MODES The system is designed to offer a maximum of 8 full duplex wireless connections simultaneously operated without any interference A wireless beltpack may be the WS 19 or the WS 29 both containing one module A base station may be the WS 200 containing two TX RX modules or the WS 400 containing four TX RX modules When in the same space more than one base station is required these stations have to be interconnected by WS Link Cables an ASL accessory A link cable contains all signals which have to be interchanged between base stations See the WS 200 or WS 400 user manual 10 1 A full duplex wireless connection is accomplished by using a dedicated I X RX channel selected on the beltpack and on the base station Each wireless beltpack needs to be assigned to a unique TX RX cha
10. nnel If another TX RX module is set to the same I X RX channel the communication is garbled and the connection does not function properly TX RX module in a base station automatically senses whether a WS 19 or a WS 29 beltpack is assigned and automatically selects the right audio routing for either beltpack type For more information see section Automatic Audio Routing in the WS 200 or the WS 400 user manual Full Duplex Mode for WS 19 and WS 29 beltpacks Such a TX RX channel links the TX RX module in a wireless beltpack to one of the TX RX modules in the base station PAGE 9 User Manual WS 19 March 2011 ASL Intercom BV 10 2 Half Duplex Mode for WS 19 single channel beltpacks only This mode allows more than one WS 19 beltpacks on the same TX RX channel However only one of the WS 19 beltpacks can talk at a time and have a full duplex connection For as long as one of the beltpacks has a full duplex connection talk listen and call the other beltpacks are able to listen to the signals coming from the base station but are not able to call or talk In case of half duplex use of WS 19 beltpacks whilst the corresponding I X RX module in the base station is connected to a wired party line intercom system the following has to be taken into account 11 0 WARRANTY ASL Intercom warrants this unit to the original end user purchaser against defects in work manship and materials in its manufacture for a per
11. perience problems with these 8 2 Antenna Wiring Base Stations If the antennas of a base station are not supposed to be directly connected to its front panel a cable between base station and antenna 15 needed base stations are equipped with SMA connectors female at the base station and male at the antenna The 2 4GHz frequency experiences a big loss in any cable e g a RG58 cable has loss of 1 dB per meter So make sure that your cable 50 ohms is suited for 2 4 GHz and that the cable is as short as possible Make the cables in lengths of a multiple of 12 e g lengths of 24cm 48cm 120cm 240cm etc 9 1 ASL WIRELESS AS A STAND ALONE SYSTEM 9 1 1 Base Station Settings a Give each TX RX module in the base station its own TX RX channel by rotating the Channel select switch Try to avoid TX RX channels to be physically next to each other e g when two WS 400 s are in your wireless system try to set them in this order TX RX channels 2 4 6 8 1 3 5 7 If one uses a WS 200 with only two beltpacks use TX RX channels 1 and 6 b Make sure the interface mode switch at the rear of the base station is set to PARTY LINE The internal party line is now linking the on board TX RX modules to each other c Turn down the side tone trimmers at the TX RX modules counter clockwise PAGE 6 User Manual WS 19 March 2011 ASL Intercom BV 9 1 2 9 2 9 2 1 9 2 2 Wireless Beltpack Settings
12. r to a level that you like User Manual WS 19 March 2011 ASL Intercom BV 9 3 ASL WIRELESS CONNECTED A PARTY LINE INTERCOM SYSTEM 9 3 1 Base Station Settings a Give each TX RX module in the base Make sure the interface mode switch at the Station its own TX RX channel by rotating rear of the base station is set to PARTY the Channel select switch LINE Try to avoid TX RX channels to be Connect the party line intercom system via physically next to each other e g when the XLR 3 connectors at the rear panel of two WS 400 s are in your wireless system the base station Each XLR 3 male and try to set them in this order TX RX female pair may connect each TX RX channels 2 4 6 8 1 3 5 7 If one uses a module to a channel of the party line WS 200 with only two beltpacks use intercom system see also section 9 3 3 TX RX channels 1 and 6 Everywhere this connection is made the internal party line is interrupted Turn down the side tone trimmers counter clockwise 9 3 2 Wireless Beltpack Settings e With the Channel Select switch at the rear of the beltpack select the TX RX channel Turn down the OWN VOICE Volume according to the WS 200 or WS 400 trimmer at the side panel of the beltpack setting counter clockwise f Connect a headset to the beltpack and Set the volume control of the beltpack at insert fully charged batteries When the approximately 50 beltpack is switched on a single short tone Push the TALK but
13. s trimmer adjusts the level of the tones which the WS 19 generates in case of a low battery warning and at start up For the TALK button to function the unit must stay in reach of the base station If not the TALK button switches off the Talk LED extinguishes As soon as the beltpack is in reach of the base station again the Talk functions are restored automatically 3 CALL button This push button activates the call system A momentary push sends a call signal to all wired wireless intercom stations connected to this beltpack see section 9 and the Call LED starts flashing Pushing the button for 2 seconds activates the CALL buzzer After the CALL button is released the call LED continues to flash for a further 2 seconds To send or receive a CALL signal the beltpack must be in reach of the base station 4 Call LED red 9 Talk LED green 7 OWN VOICE trimmer This trimmer adjusts the level of your own voice as you hear it in your headset Adjusting this signal does not affect the level of your voice as heard by other wireless or wired intercom stations see section 9 8 BUZZER VOLUME trimmer This trimmer adjusts the volume of the internal buzzer The buzzer is activated by pushing the CALL button of the WS 19 or the CALL button of any other wired and or wireless intercom station connected to this beltpack see section 9 for longer than 2 seconds 9 MIC GAIN trimmer With this trimmer the mic gain can be adjust
14. tem try to set them in this order TX RX channels 2 4 6 8 1 3 5 7 If one uses a WS 200 with only two beltpacks use TX RX channels 1 and 6 Wireless Beltpack Settings With the Channel Select switch at the rear of the beltpack select the TX RX channel according to the WS 200 or WS 400 setting Connect a headset to the beltpack and insert fully charged batteries When the beltpack is switched on a single short tone should be heard and both LED s on the front panel of the unit flash for half a second This indicates that the beltpack is functioning properly When one pushes the CALL or TALK button the LED S on the front panel are lit and the green LED of the corresponding TX RX module in the base station is lit It proofs the beltpack has connection with the base station PAGE 7 Make sure the interface mode switch at the rear of the base station is set to 4 WIRE Connect the 4 wire intercom system via the XLR 3 connectors at the rear panel of the base station Each XLR 3 male connector signal out and female connector signal in connects each TX RX module to an input output of the a 4 wire intercom system The internal party line is now disconnected Turn down the OWN VOICE Volume trimmer at the side panel of the beltpack counter clockwise Push the TALK button on the beltpack talk into the microphone and listen to your own voice Turn up the volume of your own voice by adjusting the OWN VOICE trimme
15. ton on the beltpack talk should be heard and both LED s on the into the microphone and listen to your own front panel of the unit flash for half a voice you might hear a small delay in the second This indicates that the beltpack is signal functioning properly Adjust the side tone trimmer of the g When one pushes the CALL or TALK referring TX RX module in the base station button the LED s on the front panel are lit and the green LED of corresponding TX RX module of the base station is lit It proofs the beltpack has connection with the base station so that the level of your own voice is as low as possible Adjust the OWN VOICE trimmer on the beltpack so that the level of your own voice is to your liking 9 3 3 Wiring configurations when connecting to a party line intercom system Connecting to party lines can be done in many different ways Below a few examples Example 1 When two WS 400 base stations are installed and 8x WS 19 beltpacks are available The drawing shows how to connect all WS 19 beltpacks to the same party line PEPPER WS 19 WS 19 WS 19 WS 19 WS 19 WS 19 PAP Partyline Intercom line from wired system PAGE 8 User Manual WS 19 March 2011 ASL Intercom BV Example 2 When two WS 400 base stations are installed and 8x WS 19 beltpacks are available The drawing shows how to connect WS 19 1 and 2 to party line 1 WS 19 3 and 4 to party line 2 and WS 19 5 6 7 and 8 to party
16. x SPL 65 dBA WS 19 Dimensions amp Weight width 88 mm height 49 mm depth 141 mm weight 650 grams System Specifications transceiver frequency 2400 2483 5 MHz transmit power 10 mW E I R P number of channels 8 channel separation 7 MHz dynamic range 70 dB supply voltage 7 2 V DC 4 2 V to 9 V audio freq response 200 Hz 12 kHz 3dB 0 dBu is defined as 775 mV into open circuit ASL reserves the right to alter specifications without prior notice PAGE 10 User Manual WS 19 March 2011 ASL Intercom BV
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