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Original Copyright @2019 BG7TBL.All rights reserved.
Vs.1 had Chinese characters removed and with notes in [] by Don Latham.
pictures were edited for clarity. Type face was changed to New times Roman bold. Some
descriptions were paraphrased into English commonly used in the USA by KM6FQV. No
information was added or deleted.
This manual describes how to install and use FA-2 frequency counter.
For assistance, contact: WUTONG electronic Longhua Shenzhen Guangdong CHINA
http://bg7tbl.taobao.com
http://bg7tbl.taobao.com
TEL/VX: 0086-134 2795 9750
Q Q: 1630 2767
Email: BG7TBL@GMAIL.COM/BG7TBL@QQ.COM/BG7TBL@126.COM
Date: 2019-08-19
CONTENTS
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Key Features
1. High speed, high precision, up to 11 digits/second@10 MHz
2. CH 2 input up to 6GHz
3. High precision internal OCXO, supports external 10 MHz reference frequency
4. Statistic functions: display average, max, min, p-p frequency.
5. With USB port, connect to PC, data compact HP53131 mode
6. CH 1 with power, dynamic range up to 60dB,
2.
Overview
The FA-2 frequency counter is high precision, high speed, with statistical function, auto ranging
input frequency. It is convenient for long-term monitoring of external frequency changes. Channel
2 can measure frequencies up to 6 GHz using either the internal OCXO, or an external 10MHz
standard.
BG7TBL FA-2 Frequency Counter Vs. 2A
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USER MANUAL
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In Vs. 2 text and
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Related Manuals for BG7TBL FA-2
Summary of Contents for BG7TBL FA-2
- Page 1 6. CH 1 with power, dynamic range up to 60dB, Overview The FA-2 frequency counter is high precision, high speed, with statistical function, auto ranging input frequency. It is convenient for long-term monitoring of external frequency changes. Channel 2 can measure frequencies up to 6 GHz using either the internal OCXO, or an external 10MHz...
- Page 2 Specifications: Type: FA-2 CH 1 frequency range：1Hz-200 MHz CH 1 input impedance: 50 Ohm/1M OHM CH 1 input sensitivity：50 Ohm: 25mVrms-2Vrms 1M Ohm: 25mVrms-2Vrms CH 1 frequency resolution 0.1s: 0.001 Hz @ 10 MHz 1s: 0.0001 Hz @ 10 MHz 10s: 0.00001 Hz @ 10 MHz...
- Page 3 Statistics mode data type: Average, Max, Min, & P-P Power : DC11.7-12.5V, startup: less than 0.4A, stabilized: less than 0.2A Size: L X H X D = 106 X 55 X 105 mm weight: 350g Accessory provided: DC12V adapter 1pcs [power supply] Quick Start 4.1 Rear Panel 1.
- Page 4 LCD display data when using CH 1 1: CH 1 input power 2: Frequency display 3: Units 4: Gate time，0.1s, 1s, 10s 5: Inside/outside frequency Standard [automatically detects external reference] 6: CH 1 input impedance, 1 Meg or 50 Ohm 7: Gate state display: indicates gate is open.
- Page 5 Channel 2 frequency test mode 1. Latest frequency reading 2. Reference used 3. Gate time setting *P reference for CH 1 FREQ mode [presumably same as CH 1, needs to be checked? [P is not shown here] reference channel 1 statistics mode [Think this means for reading details?] Channel 2 statistics mode: 4.4 Connecting to a PC Use the rear print port to connect to the computer USB port.
- Page 6 USB Config command [NEEDS THOROUGH TESTING] Default baud rate is 9600bps, ascii encoding $R*press RST key, return KEY RST ROK<CR><LF> $M*press MODE key, return KEY MODE MOK<CR><LF> $G* Press GATE key return KEY GATE GOK<CR><LF> $CXX* XX:0-63, setting LCD contrast, save in EEPROM, return SET LCD CONTCOK<CR><LF>...
- Page 7 6 FAQ Q : How can I know if the counter is operating properly? A : Connect the rear panel 10 MHz reference output to the front panel CH 1. The LCD should display 10 MHz. This means the counter is functioning properly. Q: When measuring low frequencies, the display is not accurate or is unstable.
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