MULTIBAND AMPLIFIER WWK-861 USER S MANUAL GZT "TELKOM-TELMOR" Sp. z o.o. 80-425 Gdask, ul. Mickiewicza 5/7 tel. (+48 58) 341 06 32, fax (+48 58) 341 70 93, e-mail: export@telmor.com.pl www.telmor.pl 2713-2902-108 1
Congratulations on your purchase of this WWK-861 multiband amplifier! Our equipment is manufactured in accordance with worldwide quality standards and fulfils the requirements of all certificates and homologations required for this kind of equipment. This device was designed and manufactured in accordance with ISO-9001 procedures, using the latest generation components. I. Application WWK-861 S1.. S3 - Channel path switches S4 - UHF3 Input bands switch (UHF / VHF+UHF) P1...P6 - UHF band channel paths UHF1 VHF BI/FM... UHF3 ATT - - UHF Antenna inputs - VHF Antenna input - FM Antenna input Attenuator The WWK-861 amplifier is designed for use in antenna systems receiving terrestrial analogue and digital TV programs in detached houses, residences, terrace houses, hotels, boarding houses, holiday centers, schools, hospitals, etc. - even situated in places with difficult reception conditions, where the received signals have different levels and are coming from different directions. WWK-861 enables to receive these signals, to equalize their levels and to amplify them. The WWK-861 amplifier can be used as an independent unit or as a part of multiswitch system as well as a part of a simple head-end station (860 MHz system). 2 2713-2902-108
II. Amplifier connection and activation 1. Never connect or start the WWK 861 amplifier until the installation of the receiving antennas has been completed. In order to select the correct antenna type you should precisely examine the receiving conditions, that is: The amount of TV channnels operating in the region and the TV channels number, on which the signals are transmitted. The signal levels received from the transmitter they will predetermine possible usage of directional antenna with high gain or suitable preamplifier assembly The transmitters located in the region if the signals are received from different directions there is need of assembling the individual antenna (antennas) for each direction. 2. Connect antennas to the amplifier inputs: TV bands IV and V antennas (470...862 MHz) to UHF1, UHF2 inputs, TV bands III antennas (174 230 MHz) to VHF input, FM antenna (47...108 MHz) to BI/FM input. Caution: It is recommended to connect to this input the antenna receiving the most of TV channels. It is possible to connect to UHF1, UHF2, and UHF3 inputs antennas with preamplifiers. Preamplifiers will be detected automatically and the 12V DC voltage will be provided on proper input. UHF3 input is universal input. This input allows to connect: - TV band IV and V antenna, or - TV band III, IV and V antenna (VHF input will be disconnected, UHF3 input becomes wideband input VHF+UHF see Table 1), or - additional devices (video camera with A/V modulator, satellite receiver, etc.) Table 1 Possible combination of TV bands and VHF and UHF3 inputs depends on S3 switch position shown in Table 1. S4 switch position, - S4 switch in left or right position TV bands connected to inputs VHF input UHF3 input VHF UHF VHF + UHF 2713-2902-108 3
3. Using S1, S2 and S3 switches, assign the required number of channel paths P1 P6 to both of the UHF inputs. Possible combination of inputs and channel paths are shown in Table 2. Table 2 Channel paths connected to the UHF S1, S2 and S3 switches positions inputs S1 S2 S3 UHF1 input UHF2 input P 1...P 3 P 6 P 1...P 3 P 5...P 6 P 1...P 3 P 6 P 1...P 3 P 4...P 6 P 1...P 4 P 6 P 1...P 4 P 5...P 6 P 1...P 5 P 6 P 1...P 6, - S1, S2 or S3 switches in up and down positions 4. Not used inputs and outputs should be terminated with 75 resistors. Every channel path conatains two regulators: - the... regulator multi-turn, enables to tune the filter to the correct channel, and - the regulator the one-turn, for the gain adjustment. 1. The regulators... set in the right end position. 2. The regulators set in middle position. 3. Connect mains plug to the power outlet. A. Programming with signal level meter 1. Connect the signal level meter to the amplifiers output. If necessary use a proper attenuator. 2. Select the proper channel number on the level meter. 3. Select the regulator... corresponding to the chosen channel number and get the maximum value on the level meter turning it left. 4. Using the gain regulator, set the required signal level. 5. Repeat steps from point 2 to 4 until all UHF channels are assigned to channel paths. B. Programming with TV receiver 1. Connect TV receiver to the amplifier output through the 20 db attenuator. 4 2713-2902-108
2. Choose the TV channel to which channel path P1 will be assigned. 3. Tune using the regulator... selected channel path to get the best picture on TV. At closing to point of proper filter alignment, the picture quality should be better. Remember, that in case of high signal level, it is hard to observe picture quality improvement, because of signal excess will be aligned by auto gain regulation system in TV receiver. In such case, reduce signal level by gain regulator of chosen channel. At lowered level, filter tuning enables to observe the picture quality changes. Then the maximum output signal level will be corresponding to the best picture quality. Caution: It is not recommended to set the gain regulators position. in the right end 4. Repeat steps from point 2 and 3 until all UHF channels are assigned to channel paths. 2713-2902-108 5
III. VHF output signals settings Using the gain regulator of UHF range, set the required output signal level. IV. FM path The BI/FM path is not adjustable. V. Connecting of additional devices Additional devices (video recorder, PC, camera with A/V modulator, etc.) can be connected after switching off the amplifier. For this purpose UHF3 input should be used. Signal level can be adjusted by ATT attenuator. VI. Final amplifier regulation This regulation could be necessary in case of amplifier adjustment with use of TV set. Connect amplifier output to the installation. Check the picture quality in all the outlet sockets. If necessary, perform correction of signals by proper gain regulators. SAFETY: 1. To achieve proper ventilation, no objects should be placed at the distance smaller than 5 cm from the device. 2. The device should not be covered by any objects like papers, tablecloths, hangings, etc. 3. Placing of open fire sources, like burning candles, nearby the device is not recommended. 4. The device should be operated in a temperate climate. 5. The device should not be exposed to drops and splashing water. 6. No objects filled with water should be placed on the device. 6 2713-2902-108
TECHNICAL DATA WWK 861 INPUTS BI/FM VHF UHF1, UHF2 UHF3 Frequency range 47 108 MHz 174 230 MHz 470 862 MHz 6 tuned channel 470 862 MHz paths* Gain 24 ±2 db 35 ±2 db 43 ±3 db 30 ±2 db Gain regulation -20 db -20 db 0, -3, -6 db smooth smooth switchable Selectivity of UHF channel paths (± 20MHz) 22 db Noise figure 3 db 3 db 5 db Max. input level** 79 dbµv 85 dbµv 81 dbµv 88 dbµv Min. input level*** - for S/N>30dB - for S/N>45dB Isolation between inputs: - UHF - UHF - BI/FM/VHF - UHF - BI/FM VHF Max. output signal level: - for 2 TV signals - for 6 TV signals (DIN 45004B (-60dB)) Preamplifiers supply / max. current In. / out. Impedance Temperature Operating range Power supply / Power consumption Dimensions / Weight 35 dbµv 50 dbµv 103 dbµv 35 dbµv 50 dbµv 108 dbµv 25 db 50 db 30 db 37 dbµv 52 dbµv 112 dbµv 107 dbµv 112 dbµv 107 dbµv 12 V DC/50 ma 12 V DC/50 ma 75 Ω / 75 Ω - 10...+ 50 C (263...323K) 230 V AC, 50 Hz / 8 W 225 x 130 x 50 mm / 0,75 kg *) allowed channel path connection combinations with antenna inputs are shown in the Table 2 **) for higher input levels from the antenna an external input attenuator should be used ***) for lower input levels the use of an antenna preamplifier is recommended 2713-2902-108 7
EXEMPLARY APPLICATIONS of WWK-861: FM Antenna ADFM - 2 Direction 1 UHF band Antenna ATV 16/-60 Direction 2 UHF band Antenna VHF band Antenna WWK-861 6 3 0 db "CATV or SMATV distribution net" (OKF taps, RM splitters, GA-35 subscriber outlets, MUP and MUK multitaps) 75 MODULATOR TV SAT RECEIVER A/V MAW-800 np. CYFRA+ MODULATOR TV SAT RECEIVER A/V MAW-800 np. POLSAT 8 2713-2902-108