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Micro908 Antenna Analyst “Assembly Manual”, v2 

Copyright 2004, G. Heron, N2APB 

Controls & Connectors Bag

1

J1

BNC, pcb mount

1

J2

Serial port connector, DB9F

1

ENC

Rotary Encoder

1

J4

Coaxial pow er connector, 2.1mm

1

J8

Socket, 1x12 pos'n (DSP out)

1

J9

Socket, 2x10 position, (DSP in)

1

J11

Mini-DIN, 6 pos'n (KBD)

3

J6, J7, J12

Audio jack, 1/8", pcb mount

1

J10

Socket, 1x8 pos'n, right angle

1

J14

Mini-Din, 8 pos'n (AUX)

1

W1

Jumper, Flexstrip, (LCD)

2

P1, P2

Pinheader, 2x34 (HC908) (cut 2 from 2x72 strip)

2

P3, P4

Pinheader, 1x2 pos'n (MON) (cut from 2x72 strip)

3

C7, C33, C34

Capacitor,  1 uF, Electrolytic, SMT

2

C5, C26

Capacitor,  10 uF, Electrolytic

1

C27

Capacitor,  47 uF, Electrolytic

1

C24

Capacitor,  100 uF, Electrolytic

1

R45

Potentiometer, 10K, miniature, pcb mount

1

S2

Slide sw itch, pcb mount, SPST

5

PB1, PB2, PB3, PB4, PB5

Pushbuttons, SPST, momentary contact

1

SPKR

Speaker, miniature, 32-ohm

5

Pushbutton caps (black)

1

Heatsink - TO220

1

Knob, 1/4"-dia shaft, (ENC)

1

Nut, zinc plated, 4-40 (U1)

1

Machine screw , zinc plated, round head, 4-40 x 0.5" (U1)

4

Spacer, nylon, hex tapped, 4-40x0.25" (LCD)

6

Spacer, nylon, hex tapped, 4-40x0.375" (PCB+DDS)

16

Machine screw , pan slotted, #4-40x0.25" (PCB+DDS+LCD)

4

Machine screw , flat slotted, #4-40x0.25" (PCB-cover)

1

Desoldering Braid

1

Solder, 63/37 Eutectic, No-Clean Flux, @28 ga.

Overlay Bag (Included with Enclosure Option)

1

Front panel overlay

1

Side panel overlay

1

End panel overlay

1

End panel (drilled)

1

End panel (undrilled)

4

Enclosure screw s

4

Enclosure rubber feet

Battery Holder Bag

1

LCD

Display, LCD, Hantronix, 16x2 STN, GRAY

1

J3

Battery holder, 8-AA cells

1

Flux Pen, No-Clean

Содержание AA-908

Страница 1: ...field use A number of standard ham radio peripherals may be connected to the Micro908 antenna paddles a PC style keyboard headphones an audio line to drive an SSB transceiver a keyline to drive a tran...

Страница 2: ...ovides detailed step by step instructions on preparation of the components installation of them to the printed circuit board and enclosure and basic calibration and operation of the instrument Other d...

Страница 3: ...Parts Inventory Carefully review the contents of each parts bag and component supplied in the kit to ensure that you have everything needed at the start of the project If a part is missing please cont...

Страница 4: ...rolytic 1 R45 Potentiometer 10K miniature pcb mount 1 S2 Slide sw itch pcb mount SPST 5 PB1 PB2 PB3 PB4 PB5 Pushbuttons SPST momentary contact 1 SPKR Speaker miniature 32 ohm 5 Pushbutton caps black 1...

Страница 5: ...Amp LMC6484 SOIC 1 U5 IC Audio Amp LM386 SOIC 1 U6 IC Level Translator TC7SET08F SOIC 1 LED1 LED T1 3 4 BUSY 2 Shunt shunt 0 1 2 pos n 3 D7 D8 D9 Diode Schottky 1N5817 DO 41 1 VR1 DDS Option Voltage R...

Страница 6: ...Bag Optional 1 DSPx DSPx for Micro908 assembly DDS Daughtercard Kit Bag Optional 1 DDS Kit DDS Daughtercard Kit Keyboard Cable Bag Optional 1 Cable Keyborad extension cable 6 Keyboard Optional 1 Keybo...

Страница 7: ...ht 2004 G Heron N2APB Section 3 PC Board Preparation Meet the Micro908 PC Board You should become familiar with the orientation nomenclature that we ll be using throughout this manual Top Component Si...

Страница 8: ...soldered wet with the liquid flux you are greatly helping the joint be clean and ready to accept the soldered component Just press down a little on the tip of the flux pen and the liquid flux will st...

Страница 9: ...l marking technique is to identify with a dot the location of the parts you are about to install making it easier for you to place and solder the part in the right spot Once soldered in place going ba...

Страница 10: ...Capacitor Diode card Check off each row as you complete installing those components Be careful to identify the cathode of the diodes on this card The cathode is the side of the diode with a single st...

Страница 11: ...d to the pc board as shown below Before soldering in place orient the heatsink as shown and use the metal screw nut to connect the two components to the pc board Then when aligned nice and straight so...

Страница 12: ...rols side of the pc board See photos below for reference 2 P3 P4 Pinheader 1x2 pos n MON NiMH 1 J8 Socket 1x12 pos n DSP out 1 J9 Socket 2x10 position DSP in 1 J10 Socket 1x8 pos n right angle for DDS...

Страница 13: ...he component polarity As shown in the photo below the longer lead is the positive and the shorter is the negative which is also identified with the black stripe on the side of the component Be sure to...

Страница 14: ...e zinc cast alignment nub that sticks up in the same direction as the shaft Taking off this small piece will allow the encoder to sit flush up underneath the front panel of the enclosure Also the enco...

Страница 15: ...about 0 3 up off the pc board See the photo below for reference 4 Install Test Points We provided for some important signals to be readily accessible to your DVM or oscilloscope probes during the ins...

Страница 16: ...cause the spacers we ll use in the next step are short and the screws will not insert far enough to seat the LCD on one side and the pc board on the other Locate the four shorter 0 25 nylon spacers Be...

Страница 17: ...in changing the displayed frequency starting at the digit that has the underline cursor beneath it This digit will be the 10 kHz digit Press and Turn Dial to Change Cursor Position When you press and...

Страница 18: ...n with settings of 9600 N81 9600 baud No parity 8 bits 1 stop bit In the Micro908 Configuration menu select Software Load and see a line of data displayed on the PC screen that shows HCmon and intelli...

Страница 19: ...is not possible and you should contact Support 6 See Shorted load displayed on the LCD Place a short circuit on the RF output jack and select yes with the dial NOTE You might consider constructing a...

Страница 20: ...amental to be used otherwise the computed displayed results will be inaccurate for the frequency we desire So the moral of the story is to adjust the DDS card to generate the best looking signal possi...

Страница 21: ...o908 by installing it into the enclosure NOTE The enclosure is an optional item and may not have been purchased If this is the case you are done Refer to the Mechanical Assembly diagram in Appendix E...

Страница 22: ...at the edge of the Micro908 pc board with the label side facing out away from the board The end panel will only go on one way and it can remain loosely in place Install the PCB Assembly into the Top S...

Страница 23: ...perf board and slide it into an old metal cigar tube for shielding Otherwise just have the probe made from stiff wire affixed to the end of that narrow perf board and an alligator clip for ground The...

Страница 24: ...ests The RS232 serial port signals of the HC908 Daughtercard were tested at assembly time so the only possible causes of this condition are the serial cable needs to be a straight thru cable not a nul...

Страница 25: ...m 90 91 C9 CA CB These high volatges are because the open circuit present a very high reflected signal Vr and an infinite impedance Vz The Vf signal is always high as it feeds the reflectometer The Va...

Страница 26: ...1 1 R28 Resistor 22K SMT 1206 1 4 R10 R13 R15 R49 Resistor 47K SMT 1206 4 R19 R24 R29 R51 Resistor 71 5K SMT 1206 1 4 R16 R21 R26 R50 Resistor 220K SMT 1206 3 R20 R30 R52 Resistor 221K SMT 1206 1 1 R2...

Страница 27: ...tentiometer 10K miniature pcb mount 1 S2 Slide switch pcb mount SPST POWER 5 PB1 PB2 PB3 PB4 PB5 Pushbuttons SPST momentary contact 1 SPKR Speaker miniature 32 ohm 5 Pushbutton caps black 1 Heatsink T...

Страница 28: ...ard Optional 1 Keyboard Dauphin Mini Keyboard Keyboard Cable Bag Included with Keyboard Option 1 Cable Keyborad extension cable 6 Enclosure Optional 1 Enclosure Pac Tec LH 57 Enclosure pre drilled Ove...

Страница 29: ...O O z z z 5V z R1 10K R3 10K R2 10K H1 KBD4 P2 9 P2 12 P1 32 P1 31 P2 33 z z z z z 5V R8 1K Busy P1 25 E2 z C1 0 1 z C2 0 1 C3 0 1 z Tones 7 8 9 10 D0 D1 D2 D3 P2 29 P2 32 A3 A2 P2 18 D0 P2 31 A1 D I...

Страница 30: ...C25 0 1 U5 LM386 R42 10K R46 10 R43 10 1 2W 5 4 2 3 6 1 8 Audio C24 100uF Audio Amp R44 4 7K z z z z C23 01 R45 10K C28 01 z V V z z z z V V z z C29 0 33 C30 0 33 C31 560 C32 560 R37 5 1K R38 5 1K J6...

Страница 31: ......

Страница 32: ......

Страница 33: ...Micro908 Antenna Analyst Assembly Manual v2 33 Copyright 2004 G Heron N2APB APPENDIX D Completed PC Board Assembly Top Component Side Bottom Controls Side...

Страница 34: ...Micro908 Antenna Analyst Assembly Manual v2 34 Copyright 2004 G Heron N2APB APPENDIX E Mechanical Assembly...

Страница 35: ...ings Displays battery voltage Transfers control to serial terminal for loading of new software Turns on mode that dumps raw internal data to serial terminal Correct reflectometer channel gains Open Sh...

Страница 36: ...able Do not use a null modem cable that swaps pins 2 and 3 from end to end 3 Start up the TeraTerm program on your PC If not already set up configure the communications as 9600 8N1 no flow control in...

Страница 37: ...of the instrument The dummy antenna described here consists of a resistor inductor and capacitor in a series circuit constructed on the end of a BNC connector that can be applied to the RF output of...

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