BG7TBL FA-2 User manual

FA-2 frequency counter
USER MANUAL
USER MANUAL USER MANUAL
USER MANUAL
Copyright @2019 BG7TBL. All rights reserved. Printed in CHI A
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This manual describes how to install and use
This manual describes how to install and use This manual describes how to install and use
This manual describes how to install and use FA-2 frequency counter
FA-2 frequency counterFA-2 frequency counter
FA-2 frequency counter.
..
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For assistance,contact：
WUTONG electronic
Longhua Shenzhen Guangdong CHINA
We site: http:// g7t l.tao ao.com
TEL/VX: 0086-134 2795 9750
Q: 1630 2767
Email: [email protected]/[email protected]/[email protected]
Date:2019-08-19
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1 Key Features
1. High speed, high precision, up to 11 digit/second@10MHz
2. CH2 input up to 6GHz
3. High precision internal OCXO, supports external 10MHz reference frequency
4. Statistical functions: Display average, max, min, p-p frequency.
5. With USB port, connect to PC, data format compact version of HP53131 mode
6. CH1 power display, dynamic range up to 60dB,
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2 Overview
The FA-2 Frequency counter is a high precision, high speed counter, with statistics function and
auto ranging input frequency. It is convenient for long-term monitoring of external frequency
changes. Channel 2 can measure frequencies up to 6 GHz. It uses a built-in OCXO, or use an
external 10MHz standard.
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3 Specification
Type: FA-2
CH1 Frequency range：1Hz-200MHz
CH1 Input impedance: 50 OHM/1M OHM
CH1 Input sensitivity：50 OHM: 25mVrms-2Vrms
1MOHM: 25mVrms-10Vrms
CH1 Frequency resolution：0.1s：0.001Hz@10MHz
1s: 0.0001Hz@10MHz
10s: 0.00001Hz@10MHz
CH1 Test speed:12digits/second@100MHz-200MHz
11digits/second@10MHz-99.999999MHz,
10digits/[email protected]
9digits/[email protected]
8digits/second@90kHz-99kHz
8digits/[email protected]
CH1 Power test range：-50dBm-+20dBm, 1MHz-550MHz@50 OHM
CH1 Power accuacy: 0.5dB@10MHz
CH1 Connector type: BNC
CH2 Frequency range: 30MHz-6GHz
CH2 Input impedance: 50 OHM
CH2 Frequency resolution：0.1s: 1Hz@1GHz
1s: 0.01Hz@1GHz
10s: 0.001Hz@1GHz
CH2 Input power range:-20dBm- [email protected],
CH2 Connector type: SMA
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Gate time：0.1s/1s/10s
Internal frequency standard: 10MHz OCXO
Internal frequency standard ageing: 0.5Hz/year
10MHz Reference frequency output power: 4dBm
External reference frequency input level range: 0dBm to +20dBm
Run mode: CH1 frequency
CH1 statistics
CH2 frequency
CH2 statistics
Front panel: MODE, change mode
GATE: change gate time.
RST: restart test
CH1: channel 1 input
CH2: channel 2 input
Rear panel: 10MHz REF INPUT
10MHz REF OUTPUT
USB connector
STD ADJ: Internal OCXO frequency adjust
Power Switch
DC plug
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*H*D = 106*55*105mm
Weight: 350g
Accessory: DC12V adapter 1pcs
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4 Quick Start
4.1 Rear Panel
rear panel
1: 10MHz Frequency standard input and output
2: USB port, chip is FT232RL, USB driver is available from the FTDI web site
3: Internal OCXO frequency adjust
4: Power on/off
5: DC12V input
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4.2 Front Panel
Front panel
1: 2864 LCD
2: MODE key，change run mode
3: GATE key, change gate time
4: RST key, restart test,
RST+GATE, open/closed ch1 LPF,
RST+MODE, CH1 select 50R/1MOHM
5: Channel 2 input
6: Channel 1 input
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4.3 LCD display data
CH1 FREQ
1: CH1 input power
2: Frequency display area
3: Units
4: Gate time，0.1s, 1s, 10s
5: Internal/external frequency standard
6: CH1 input impedance, 1MOHM/50R
7: Gate state, display * means gate is open, else gate closed
8: Display P means high precision mode
9 : 150kHz LPF
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Channel statistics mode
1)
1-4000000000，statistical points.
2)
Latest measured frequency
3)
Average value
4)
Max value
5)
Min value
6)
Peak-peak value
7)
Input impedance, 50OHM OR 1MOHM
8)
Std internal or extern
9)
Gate times
10)
LPF select
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Channel 2 frequency mode
1)
Latest measured frequency
2)
Std selected
3)
Gate time
*P reference is only for CH1 FREQ mode
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Channel 2 statistics mode
Channel 2 statistics mode
4.4
Connection to PC
USB Port: Connect to PC，USB chip is FT232RL.
4.5 Config command
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>
$G* Press GATE key, return KEY GATE GOK<CR><LF>
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$CXX* XX:0-63, setting LCD contrast, save in EEPROM,
return SET LCD CONTCOK<CR><LF>
$BXXXXX* setting baudrate, XXXXX 00480, 00960, 01920, 03840, 05760, 11520, Power off
without save,
return BOK<CR><LF>
$S* Read statistics data
The following instructions are powered off and saved:
$E2020* Power up select CH1 frequency mode
$E2121* Power up select CH1 frequency statistics mode
$E2222* Power up select CH2 frequency mode
$E2323* Power up select CH2 frequency statistics mode
$E3030* CH1 select 50R
$E3131* CH1 select 1MOHM
$E3232* BEEP ON.
$E3333* BEEP OFF
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$E3434* Open high precision mode
$E3535* Close high precision mode, all input frequency is 8 digits/second
$E3636* Open CH1 LPF
$E3737* Close CH1 LPF
$E4040* Select CH1=50R,input 10MHz, 0dBm,calibration of power meter, used with $E4141*
command
$E4141* Select CH1=50R,input 10MHz, -20dBm, calibration of power meter
4.6 User notes
Keep instrument away from high temperature, away from interference, power input must be less
than DC12.5V
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Block diagram
(Missing)
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6 FAQ
Q : How can I know the machine is good.
A : Connect front panel 10MHz to rear panel CH1, if LCD will display 10MHz counter is good.
Q: When measuring low frequencies, display is not accurate/unstable
A: Enable LPF
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