This is the Ku band 10 GHz LNB (Low Noise Block) with external reference input. Special small Bias Tee box with TCXO or 10 MHz reference signal works as DC injector and also 25 MHz for LNB.
GPSDO 10MHz Disciplined oscillator BG7TBL with LCD
10 MHz GPSDO reference source with unique algorithm for high accuracy
228.69 €
(tax incl.)
228.69 €
189.00 € (without tax)
189.00 € (without tax)
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A GPSDO (GPS Disciplined Oscillator) is a device that uses the highly accurate timing signals from a GPS receiver to control and stabilize an oscillator. It relies on the GPS 1-pulse-per-second (1PPS) output to discipline a temperature-controlled crystal oscillator (TCXO) on the control board. Using a specialized filtering method, the GPSDO removes jitter from the GPS 1PPS signal, allowing the TCXO to maintain exceptionally high frequency accuracy through continuous correction. The circuit board is equipped with an LCD display that shows GPS signal strength, time, and real-time frequency accuracy.
The 1575 MHz signal from the GPS antenna enters the GPS module. The module outputs both a 1PPS (one-pulse-per-second) signal and a GPS lock signal, which are passed to the CPLD (FPGA) and MCU. The 1PPS signal is used as a gate reference to measure the frequency error of the 10 MHz OCXO. Based on this measurement, the MCU generates an EFC (Electronic Frequency Control) correction signal, which adjusts the OCXO’s control voltage to maintain precise output frequency.
Main functions
- GPSDO 10 MHz
- Unique algorithm removing GPS signal jitter
- 10 MHz sine wave output
- 1 PPS output
- GPS NMEA RS232 output
- LCD with configurable display
Parameters
- Supply voltage: DC 11.7 - 12.9 V / ≤ 15 W
- GPS antenna voltage: DC 5 V/0.1 A
- Output 1PPS signal: square wave, 3.3 Vpp
- 10 MHz output sine wave
- 10 MHz output power: 11 dBm +/- 2 dB
- RS232 output: signal GPS NMEA, 9600 bps (fixed)
- Accuracy: peak value 0.003 Hz to 10 MHz
- Average frequency stability: 0.0001 Hz to 10 MHz
- LCD with status information
- AT commands for configuration
- Dimensions: 175x105x55 mm (W x H x L including connectors)
- Power supply
- GPS antenna with 5 m coax
Front panel
- BNC output: 10 MHz sine wave
- BNC 1PPS: pulses 1PPS, synchronised to UTC
- SMA for GPS antenna
- PWR LED indicator: indication of supply and GPS lock - blinking (GPS not locked), long light (GPS locked), no light (missing power supply)
- ALM LED indicator: light (accuracy better than 0.1 Hz), no light (accuracy low or the same as 0.1 Hz)
- DB9 RS232 GPS NMEA 9k6
- DC jack
Rear panel
- LCD 1602
Warm up start
- The first start in new location can take around 5 minutes
- Depends on satellite count and GPS antenna position
- There is also warm up of the internal TCXO box - also a few minutes
Accuracy:
The accuracy is two orders of magnitude higher than that of a standard temperature-controlled crystal oscillator. With continuous GPS lock and strong satellite reception, the measured output frequency (PP) can be maintained within 0.003 Hz.
LCD note
1. GPS Signal Strength DisplayThe first two characters on the top line indicate GPS signal strength.
- Character 1: Antenna icon (always displayed)
- Flash = Rb not locked
- ON = Rb deviation > 0.001 Hz
- OFF = Rb deviation < 0.001 Hz
- Character 2: GPS signal strength indicator with six levels, from weakest to strongest:
- Flashing single bar
- Single bar
- Two bars
- Bars 2+3
- Bars 2+3+4
- Bars 2+3+4+5
A six-character area that can be configured through commands. See manual for more information.
3. Time Display AreaAn eight-character area showing the time, which can also be adjusted via commands.
4. Disciplined (Taming) Status IndicatorA single-character indicator
- Displays “L” when the system is fully disciplined and operating at its highest accuracy.
- Otherwise, this position remains blank.
A fifteen-character section that shows the output reference frequency.
LCD Self-TestUpon powering on the device, the LCD first shows all pixels, then clears completely. This allows the user to verify that the LCD dot matrix is functioning correctly.
RECOMMENDATIONS TO BUY:
- SMA-BNC cable (total length about 50 cm)
- 8-way distributor
Included in package
Rubidium standard
GPS antenna 5m long
DC plug cable
Manual
If you want to know more please check manual.
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