PLJ8LED is a costeffective frequency display component of 8bit digital tube display. It is mainly used for the display of frequency values of transceiver and other equipment, and can also be used for conventional frequency measurement. This component has the characteristics of compact and delicate, reliable performance, good visual effect and low cost.
Features:
With Microchip"s PIC16F648A, 2.4 GHz frequency meter.
Using temperaturecompensated voltage controlled crystal oscillator (2.5 ppm VCTCXO).
Unique gate control and precise time algorithm (nontimed interrupt).
Gate (display refresh) time 0.01 seconds 0.1 seconds 1.0 seconds, realtime display frequency value.
Singleended input design, threechannel frequency measurement (low channel high channel Auto Channel).
Dual frequency design, value and IF down mode can be preset separately.
Using eight 0.56 inches high brightness digital display, eight adjustable brightness.
Circuit is simple and reasonable structure, twobutton control, simple operation.
The settings are automatically saved, boot directly call.
Specification:
Model:PLJ8LEDH
Type: Backlight font red, Backlight font blue(Optional)
1. Gate time:
0.01 S
0.10 S
1.0 S
2. Measurement channels (channels are low impedance):
low channel
Measuring range: 0.1 MHz ~ 60 MHz
Accuracy: + 100Hz (0.01 1s gate time)
+ 10Hz (0.1 seconds gate)
+ 1Hz (1.0 seconds when the gate)
Low channel sensitivity:
0.1 MHz ~ 10 MHz: better than 60mVPP
10 MHz ~ 60 MHz: better than 60mVPP
60 MHz ~ 75 MHz: Not tested
high channel (divided by 64)
Measuring range: 20 MHz ~ 2.4 GHz
Accuracy: + 6400Hz (0.01 seconds gate)
+ 640Hz (0.1 1s gate time)
+ 64Hz (1.0 1s gate time)
High channel sensitivity:
20 MHz ~ 30 MHz: better than 100mVPP
30 MHz ~ 60 MHz: better than 50mVPP
60 MHz ~ 2.4GHz: not tested
Auto Channel
Automatically selected according to the input signal frequency high or low channel channel, identifying the frequency of 60 MHz. Such as when the input signal amplitude is greater than 60 MHz shortage can not automatically select high channel, the channel should manually select high frequency measurement.
3,IF settings
Independent doubleIF design, adjust the minimum frequency step of 100 Hz,frequency range 0 ~ 99.9999 MHz, can be set to increase or decrease the IF frequency mode.
4. Frequency reference
Using 5032 package 13.000MHz Warming voltage controlled crystal oscillator (VCTCXO), frequency stability of + 2.5 ppm.
5. Operating voltage
DC Input: DC 9V ~ 15V (with reverse polarity protection)
6. Current
Maximum 160 mA (test conditions: 1) DC12V power supply; 2) red LED; 3) eight brightness)
7. Eight LED display, the highest display eight digits.
8. Eight LED brightness is adjustable, factory set to maximum brightness.
9. Physical Dimensions,Length x width x height: 125.5 mm x 25.5 mm x 21.5 mm
10. Component quality 46 g (NW)
11. Onboard Interface
12.DC IN (Power Interface): HX2.542P socket
13.RF IN (signal input): HX2.542P socket
14.ICSP (programming interface): 2.546P Pin
15.Weight: Approx.47g1.7oz
Package list:
1 x Frequency Counter
2 x cable
.With Microchip"s PIC16F648A, 2.4 GHz frequency meter.
Using temperaturecompensated voltage controlled crystal oscillator (2.5 ppm VCTCXO).
Unique gate control and precise time algorithm (nontimed interrupt).
Gate (display refresh) time 0.01 seconds 0.1 seconds 1.0 seconds, realtime display frequency value.
Singleended input design, threechannel frequency measurement (low channel high channel Auto Channel).
