Sanjian Studio PLJ-8LED-C Скачать руководство пользователя страница 1

Страница: 1 / 13

PLJ-8LED Frequency Counter

User Operating Manual

8-digit LED Frequency Counter Module

Model PLJ-8LED-C

User Manual V 1.0

May 2014

Appendix with test details and schematics and additional notes in the

main text of this manual were added in August 2016 by ZL2PD.

Information including Links and Code (Software) Supplied or Referenced in this Document is

supplied by MPJA inc. as a service to our customers and accuracy or usefulness is not guaranteed

nor is it an Endorsement of any particular part, supplier or manufacturer. Use of information

and suitability for any application is at users own discretion and user assumes all risk.

All rights are retained by the Owners/Author(s)

-TE

Содержание PLJ-8LED-C

Страница 1: ...ugust 2016 by ZL2PD Information including Links and Code Software Supplied or Referenced in this Document is supplied by MPJA inc as a service to our customers and accuracy or usefulness is not guaran...

Страница 2: ...z frequency meter Frequency reference using a temperature compensated voltage controlled crystal oscillator 2 5 ppm VC TCXO Unique gate control with precise time algorithm No timer interrupt Gate disp...

Страница 3: ...75 MHz Not specified High channel Divide by 64 Measuring range 20 MHz 2 4 GHz Accuracy 6400Hz 0 01 sec gate time 640Hz 0 1 sec gate time 64Hz 1 0 sec gate time High channel sensitivity 20 MHz 30 MHz...

Страница 4: ...led crystal oscillator VC TCXO in 5032 package Frequency stability 2 5 ppm 5 SUPPLY DC Input 9V 15V Reverse polarity protection Current 160 mA max Test conditions 12VDC supply red LED display brightne...

Страница 5: ...2 MOUNTING DIMENSIONS 3 USING THE MODULE A PREPARATION 1 Please check the power supply voltage DC 9V 15V and confirm the power supply polarity before use The power supply circuit in the module has a s...

Страница 6: ...ter User Operating Manual 6 2 The signal input 2 pin port may be connected directly to the measured signal wired or to an antenna inductive mode B MENU STRUCTURE SYSTEM SETTINGS Red display character...

Страница 7: ...PLJ 8LED Frequency Counter User Operating Manual 7 GATE TIME ADJUSTMENT SYSTEM RESET...

Страница 8: ...n setting is ignored In practice pin 3 GND and pin 4 of the ICSP programming interface ICSP can be connected to a 2P DuPont connector immediately adjacent or on the pins See location circled in red be...

Страница 9: ...LIST PLJ 8LED C module in anti static bag 1pc XH2 54 2P 20cm long cable 2pcs PRECAUTIONS Two XH2 54 2P 20cm cables are included in the package Please note the color polarity and connect correctly Che...

Страница 10: ...put signal Check if the ripple on the power supply being used with the module is too large then check whether if something near the module is generating a strong signal The module can reject invalid s...

Страница 11: ...re no other hardware or software traps Attachments containing the frequency meter data for previous releases can be found on the hellocq net forum as follows 2008 11 03 http www hellocq net forum read...

Страница 12: ...a stability better than 1 Hz 2 SENSITIVITY The sensitivity of the module was measured by F6KEH shown below Low Channel CH L High Channel CH H 3 SCHEMATIC AND MODIFICATIONS It is noted that the UHF cha...

Страница 13: ...them to two separate input connectors one for each channel Note The High channel including prescaler is located on the visible side of the PCB adjacent to the PIC microprocessor and the TM1639 LED dis...