Realignment should therefore not Page 14 Alignment Setup the test equipment as shown below, apply Connect the positive lead of the DC voltmeter to the test point TP VCV on the RF-Unit, as The transceiver must be programmed for use in the in- indicated in the figure, and the negative lead to tended system before alignment is attempted. Page 16 Alignment Move the Slide bar, as needed, to set the power When the 5Watt level is attained, press the "OK" output to the following specification, as indicated box to lock in the new data.
Page 17 Alignment Move the Slide bar, as needed, to set the Max To adjustment click the left mouse button on the Deviation Wide to the following specification, "Modulation balance" then "Start" button.
Max Deviation Wide : 2. This parameter is used to align DCS deviation. Set the transceiver to CH 1 via the "Channel" box Set the transceiver to CH 1 via the "Channel" box located upper right corner on the "Alignment" located upper right corner on the "Alignment" Set the transceiver to CH 1 via the "Channel" box located upper right corner on the "Alignment" window previously. Page 21 Alignment Set the transceiver to CH 2 via the "Channel" box located upper right corner on the "Alignment" window previously.
To adjustment click the left mouse button on the "Threshold noise SQL" Page 22 Note Page Clone Clone [ Ch. Here is transceiver, and the data will be transferred. D: Lot.
Page 26 RF Unit Ver. Page 27 RF Unit Ver. Page 34 RF Unit Ver. Page 35 RF Unit Ver. Page 36 RF Unit Ver. Page 37 RF Unit Ver. This function requires the solder short JP8 JP Circuit Configuration by FrequencyThe receiver is a double-conversion superheterodyne witha first intermediate frequency IF of Incoming signals from the antenna aremixed with the local signal from PLL to produce the firstIF of This is then mixed with the This is detected to give thedemodulated signal.
It isthen amplified and sent to the antenna. Signals within the frequency range of the transceiver arethen passed through a varactor-tuned bandpass filter con-sisting of L, L before RF amplification by Q 2SC The amplified RF is then band-pass filtered again by var-actor-tuned resonators L, L to ensure pure in-band input to 1st mixer Q 3SK The Realignment should therefore not be necessary except in the event of a component failure, or altering version type.
All component replacement and service should be performed only by an authorized Ver- tex Standard representative,or the warranty policy may be void. The following procedures cover the sometimes critical and tedious adjustments that are not normally required once the transceiver has left the factory. However, if damage occurs and some parts subsequently are placed, realign- ment may be required. If a sudden problem occurs dur- ing normal operation, it is likely due to component fail- ure; realignment should not be done until after the faulty component has been replaced.
We recommend that servicing be performed only by au- thorized Vertex Standard service technicians who are ex- perienced with the circuitry and fully equipped for repair and alignment. Therefore, if a fault is suspected, contact the dealer from whom the transceiver was purchased for instructions regarding repair.
Authorized Vertex Standard service technicians realign all circuits and make complete performance checks to ensure compliance with factory specifications after replacing any faulty components. Those who do undertake any of the following alignments are cautioned to proceed at their own risk. Problems caused by unauthorized attempts at realignment are not covered by the warranty policy.
Also, Vertex Standard reserves the right to change circuits and alignment proce- dures in the interest of improved performance, without notifying owners.
Under no circumstances should any alignment be attempt- ed unless the normal function and operation of the trans- ceiver are clearly understood, the cause of the malfunc- tion has been clearly pinpointed and any faulty compo- nents replaced, and realignment determined to be abso- lutely necessary.
The following test equipment and thorough familiarity with its correct use is necessary for complete realignment. Correction of problems caused by misalignment result- ing from use of improper test equipment is not covered under the warranty policy. While most steps do not re- quire all of the equipment listed, the interactions of some adjustments may require that more complex adjustments be performed afterwards.
Do not attempt to perform only a single step unless it is clearly isolated electrically from all other steps. Have all test equipment ready before beginning, and follow all of the steps in a section in the order presented.
Correct alignment is not possible with an antenna. After completing one step, read the following step to de- termine whether the same test equipment will be required. If not, remove the test equipment except dummy load and wattmeter, in connected before proceeding. When the transceiver is brought into the shop from hot or cold air, it should be allowed time to come to room temperature before alignment.
Whenever possible, alignments should be made with os- cillator shields and circuit boards firmly affixed in place. Also, the test equipment must be thoroughly warmed up before beginning. The transceiver must be programmed for use in the in- tended system before alignment is attempted. The RF pa- rameters are loaded from the file during the alignment process. PLL Reference Frequency With the wattmeter, dummy load and frequency counter connected to the antenna jack, and select band center fre- quency channel, key the transmitter and adjust VR on the RF-Unit, if necessary, so the counter frequency is within Hz of the channel center frequency for the trans- ceiver version.
Alignment Important In order to facilitate alignment over the complete switch- ing range of the equipment it is recommended that the channel data in the transceiver is preset as the chart be- low. And it is operated by the alignment tool automatically. During the alignment mode, normal operation is suspend- ed. Use the alignment tool program running on PC. C That is all of the installation pro- cess. Some features may require the purchase and installation of optional internal accessories.
The possible PF button programming features are illustrated below, and these functions are explained on the pages to follow. There is no limit as to the number of channels which may be assigned to each group. The Dealer will have made the group assignment at the time of channel program- ming. Page 11 H The scanner will search the two channels; it will pause each time it finds a channel on which someone is speaking.
If so, the key may be used for one of the other Pre-Programmed Functions. Press the assigned PF button to initiate an emergency call. Page 12 VX O Page Optional Accessories Availability of accessories may vary; some accessories are supplied standard per local requirements, others may be unavailable in some regions.
0コメント