QRP Labs QCX-mini CW Manuels

Manuels et Guides d'utilisation pour QRP Labs QCX-mini CW. Nous avons 1 QRP Labs QCX-mini CW manuel disponible en téléchargement PDF gratuit: Mode D'emploi

QRP Labs QCX-mini CW Mode D'emploi (133 pages)

Marque: QRP Labs | Catégorie: Émetteurs-récepteurs | Taille: 11.75 MB

Table des Matières

Table des Matières
2
Introduction
4
Parts List
5
Assembly - General Guidelines
10
Special Care
12
Inventory Parts
24
Wind and Install Transformer T1
25
Install IC2 Socket
33
Install 100Nf (0.1Uf, "104") Capacitors
34
Install All 470Nf, "474" Capacitors
35
Install 47Nf, "473" Capacitor
35
Install Capacitors C25 and C26 from Low Pass Filter Kit
36
Install Capacitors C27 and C28 from Low Pass Filter Kit
37
Install Capacitor C30
38
Install Capacitors C5 and C8
39
Install 1Uf, "105" Capacitors C21, and C22
41
Install 1N5819 Diode
42
Install 20Mhz Crystal XTAL1
43
Install 27Mhz Crystal Xtal2Or TCXO Option
45
Install 500-Ohm Multi-Turn Trimmer Potentiometer
47
Install 50K Multi-Turn Trimmer Potentiometers
48
Install 470Uf Capacitors
50
Install 30Pf Trimmer Capacitor C1
51
Install MPS751 Transistor Q6
52
Install Three BS170 Transistors
53
Install 2X3-Pin In-Circuit Programming Header
54
Install 2X5 LCD Header
55
Install 2X4 UI Header
56
Wind and Install Toroid L4
56
Wind and Install Toroid L2
58
Wind and Install Toroids L1 and L3
60
Install 2.1Mm Power Connector
61
Install RF Output BNC Connector
62
Install 3.5Mm Stereo Jack Connectors
63
Break Apart Inner Pcbs of Display Board
64
Install LCD Module
67
Install 2X5-Pin Male Pin Header Connector
68
Install Four 11Mm Nylon Spacers
68
Install 20K Trimmer Potentiometer R47
69
Install 2X4-Pin Male Header on Controls PCB
71
Install Rotary Encoder
72
Install Tactile Switch Buttons
73
Install Gain Control Potentiometerr36
73
Install 11Mm Nylon Hex Spacer
74
Fit Controls PCB to Main PCB
75
Install Microcontroller
76
10Uf Input Capacitor C38
76
Plug Together the Two Boards
80
Connections for Basic Operation
80
Notes on Fault-Finding for the QCX-Mini
81
Adjustment and Alignment
82
Installation in the Optional QCX-Mini Enclosure
90
QCX-Mini GPS Interface and PTT Output
93
QCX-Mini CAT Port
94
Circuit Design of the QCX-Mini
95
Block Diagram and Summary
95
Circuit Diagram
95
Synthesized Oscillator
98
Transmit/Receive Switch
99
Band Pass, Phase Splitter, QSD and Pre-Amps
100
90-Degree Audio Phase Shift
101
CW Filter
102
Audio Amplifier
102
Transmit Signal Routing and PA Driver
104
Class-E Power Amplifier
105
Low Pass Filter
107
Key-Shaping Circuit
107
Microcontroller
108
Optional GPS Interface
114
In Circuit Programming (ISP) Interface
115
Test Equipment
115
Voltage Regulator
117
Fault-Finding
118
Blank LCD or Blocked LCD
118
No Back-Light at All
118
A Row of Blocks Appears on the Top Row
118
DC Voltage Readings
118
RF Power Output Check
121
Measurements
123
Equipment
123
Transceiver Current Consumption
123
Transmitter Power Output
124
Class-E Power Amplifier Drain Waveform
125
RF Envelope Key-Shaping
125
Low Pass Transmitter Harmonic Output Filter Characteristics
126
Band Pass Receiver Input Filter Characteristics
126
Quadrature Sampling Detector Bandwidth
129
CW Filter Response
130
Unwanted Sideband Rejection
131
Resources
133
Document Revision History
133

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