English dropdown-ico

Macsense Connectivity DWM-4 manual

1
2
3
4
5
6
7
8
9
10
11
12

Go to page of

Similar user manuals

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Macsense Connectivity DWM-4, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Macsense Connectivity DWM-4 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Macsense Connectivity DWM-4. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Macsense Connectivity DWM-4 should contain:
- informations concerning technical data of Macsense Connectivity DWM-4
- name of the manufacturer and a year of construction of the Macsense Connectivity DWM-4 item
- rules of operation, control and maintenance of the Macsense Connectivity DWM-4 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Macsense Connectivity DWM-4 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Macsense Connectivity DWM-4, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Macsense Connectivity service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Macsense Connectivity DWM-4.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Macsense Connectivity DWM-4 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    - 1 - Welcome : Thank you for your purchase of the DWM-4 Digital Wattmeter. The DWM-4 represents an advancement in technology that has never before been available in RF power measurement. With the integration of a microprocessor to existing RF sensor technology, the DWM-4 offers the flexibility of digital processing while keeping the interface to t[...]

  • Page 2

    - 2 - in the assembly instructions to assist the builder. These can be used for parts identification and PC board placement. Assembly: You will first install (locate, place, and solder in place) the parts on the DWM-4 Main PC board. Use the silk screen layout in the back of this manual to assist in locating where parts are to be installed. ___ Inst[...]

  • Page 3

    - 3 - ___ Install the socket for U1. Note the orientation of the socket. The flattened corner goes in the upper left, toward the 14-pin DIP socket for U3. Do not install U1 (the 68HC11) until later. ___ Install the 8 MHz crystal. ___ Install the electrolytic capacitor, C2, 10uf radial. Note the polarity. ___ Install the 1/8" stereo jacks, J1-5[...]

  • Page 4

    - 4 - ___ Install the LCD Module in the chassis. Use the 4 black flat head screws, the two #4 nylon washers and four nuts. Use the washers on the Status/SWR side of the chassis. Do not over tighten the mounting screws. ___ Install the SPST toggle switch (SW1) in the chassis in the Power On position. Remove the nut and one washer from the switch. Pl[...]

  • Page 5

    - 5 - You are now ready to mount the DWM PC board in the chassis. ___ Install the DWM-4 PC board in the chassis using four screws, nylon spacers, washers and nuts. Do not drill out the holes in the PC board ___ Install U1 (the 68HC11) by carefully pressing it into place in its socket. Note that U1 has a flattened corner that should match the socket[...]

  • Page 6

    - 6 - ___ Install the .01uf monolithic capacitors, C1 and C2. ___ Install 1/8" ste reo jack. ___ Unwrap the enclosure. Install the SO-239 connectors. Put one #4 screw in hole and place two nuts on the screw. Repeat with the other three screws. Do not tighten them at this time. ___ Place the PC board onto the SO-239s. Align the 1/8” jack with[...]

  • Page 7

    - 7 - HF/QRP Remote Sensor Assembly Instructions ___ Wind T1 with 10 turns using the red and gr een #28 gauge wire. T1 is the small, black toroid just under one half inch in diameter. See picture below and wind this in bifiliar fashion by using two lengths of wire and winding them at the same time. It doesn’t matter if you twist them or wind them[...]

  • Page 8

    - 8 - ___ Install C4, 3.5-13 pf trimmer capacitor. Note that C4 has two pins that are common (connected). They should line up with the two holes in the PC board that are connected together with a trace on the bottom. ___ Install T1. It lies flat against the PC board and the #18 wire will pass through the center (you will install this later). Hold t[...]

  • Page 9

    - 9 - Installation: The DWM-4 operates from an 11 to 15 volt DC power source. The current requirement is about 75 mA. Be sure to use a power supply or power adapter that meets these requirements. The coaxial DC jack on the back of the display unit will accept a plug with an OD of 5.5 mm and ID of 2.5 mm. You can use any 50 ohm cable to connect the [...]

  • Page 10

    - 10 - menu offers information about each of the four sensor inputs. Some items are common across different menus. There are two basic wattmeter modes: setup and operate. During setup, you can select bargraph or numeric display, peak or average display, set SWR alarms, and select which sensor type is connected to each input along with a power range[...]

  • Page 11

    - 11 - At a minimum, a 100 W HF radio and good 50ohm dummy load can be used to calibrate the HF sensor and display unit. Even if you know how much power your radio emits, consider using an additional wattmeter of known accuracy to assist you during the calibration process. Start by setting R1 through R8 to their center positions. Connect the HF sen[...]

  • Page 12

    - 12 - was installed correctly. Make sure U3 is installed correctly. Check D1 for polarity. Check the SIP resistor (RP1) for proper orientation. No Display: Make sure the 14-pin ribbon cable is installed and oriented properly. Be sure the nylon washers are in place on the two nuts closest to the outside. Turn R25 (LCD Contrast) fully counter- clock[...]