GP-Probe DIN L1

Designed for telecom to monitor GNSS interference and synchronization quality

Cost-effective GNSS probe with built-in RF blocker, onboard GNSS spoofing/jamming detection and LUA scripting. Compatible with GP-Cloud.

GP-Probe DIN L1 - GNSS L1 sensor for interference monitoring

Key Features Specification Ordering Information Resources

Key Features

GP-Probe DIN L1 covers three primary applications: GNSS interference detection and classification, PPS accuracy monitoring, GNSS signal quality analysis, and logging. The device is easily installed between a GNSS antenna and a receiver or time server. When an event is detected, the GNSS and PPS outputs are immediately disabled, preventing any counterfeit signals from reaching your systems.

Three-in-One Solution

The combination of three functions: interference detection, PPS accuracy and signal quality monitoring makes the device perfect for ensuring reliable synchronization of 5G infrastructure.

Onboard RF Blocker

In the event of spoofing detection or signal quality degradation, the integrated RF switch and GNSS jammer will block your GNSS receiver, ensuring high synchronization accuracy in any GNSS interference scenario.

PPS Accuracy Monitoring

GP-Probe DIN1 measures the time offset between internal and external PPS and streams the data to GP-Cloud for real-time monitoring, statistical analysis, and user notifications.

Cyber-Safe, 24/7

GP-Probe utilizes a secure, Non-Linux, real-time operating system that is immune to cyber threats. The combination of built-in hardware fault monitoring and a secure firmware update engine ensures continuous 24/7/365 critical infrastructure defense.

Embedded Lua Scripting

Develop custom scenarios for external equipment remote control via RS232/Telnet/SNMP with the embedded LUA scripting engine.

Easy-to-Install

The device is installed and configured in minutes thanks to the DIN-compliant mounting and the integrated Web Configuration Panel

Specification

Supported GNSS

GPS L1 C/A

QZSS L1 C/A L1S

GLONASS L1OF

BeiDou B1I/B1C

Galileo E1B/C

SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN

Traceable GNSS

Any combination of constellations

GNSS Channels

One GNSS RF channel for interference/anomaly detection and signal quality analysis

Detected Threat Types

Interference in 60 MHz band.

Anomalies caused by:

asynchronous spoofing
synchronous spoofing with high power
synchronous spoofing after the start of parameter drifting

GP-Probe Configuration

Browser-based configuration and monitoring

GP-Cloud

Display

GP-Probe status

Server connection settings and status

GNSS channel status: satellites in view, RMS CN0

Mechanical

Housing:	DIN rail housing. Polyamide with metal foot catch
Size:	139.4 x 118 x 25 mm
Weight:	0.5 kg

Environmental

Operational Temperature:	-20°C to +50°C
Storage Temperature:	-20°C ~ +70°C
Humidity:	0% – 90% RH non-condensing @ 40°C

GNSS Antenna Input

Connector:	SMA(F)
Max Input Power Level:	0 dBm
Impedance:	50 Ω
Antenna bias voltage:	3.3 VDC
Maximum Antenna Current:	50 mA
Detectable faults:	Short circuit Disconnected antenna
ESD protection:	±15-kV Air discharge mode IEC 61000-4-2

GNSS Antenna Output

Connector:	SMA(F)
Impedance:	50 Ω
ESD protection:	±15-kV Air discharge mode IEC 61000-4-2
Embedded GNSS Jammer Output Power:	-50 dBm, RMS
Isolation Level for Closed Channel:	>60 dB
Maximum Allowable Input Voltage for Active Antenna Power Supply:	15 V

PPS Input

Connector:	SMA(F)
Impedance:	50 Ω, TTL compliant
High-Voltage Level (50 Ω):	1.5 Min 5.5 Max
ESD protection	±15-kV Air discharge mode IEC 61000-4-2

PPS Output

Connector:	SMA(F)
Impedance:	TTL into 50Ω
Typical Accuracy (clear sky):	±20 ns RMS to UTC (USNO), typical
ESD protection:	±15-kV Air discharge mode IEC 61000-4-2

I/O Connections

Network Interface:	10/100BASE-T RJ45
RS-232 interface:	HOST port for remote control of external equipment. ±15-kV Air discharge mode IEC 61000-4-2

Relay Output

Relay Type:	1 Form C (SPDT); NO-C-NC
Contact Material:	Silver Alloy with Gold Alloy Overlay
Switching Power:	60 W, 125 VA
Switching Voltage DC:	220 V
Switching Voltage AC:	250 VAC
Switching Current:	2 A
Contact Resistance:	75 mOhms

Power Supply

DC:	12 – 48 VDC
Power Consumption:	< 3.5 W

Supported Protocols

GP-Cloud interaction:	HTTPS
Ethernet Protocol:	IPv4, DHCP (RFC 2131)

Regulatory Compliance

Complies with the requirements: CE | FCC | RCM | ROHS

EMC:	ETSI EN 301 489-1 ETSI EN 301 489-19 FCC Part 15B
RF:	ETSI EN 303 413 ETSI EN 301 511
Safety:	EN 62368-1

Warranty & Support

Warranty:	1 year Extended warranty is available
Support:	1 year of complimentary technical support

Package Content

GP-Probe DIN L1:	1 pc.
Manuals:	Quick start guide

Ordering Information

GP-Probe model number definition

PPS

PPS input, PPS output, PPS phase measurement module.

BL

GNSS output, embedded RF blocker.

RL

NO-C-NC Relay, RS232 port.

SCR

Display and keypad.

Typical Hardware Configurations

GP-Probe DIN L1 - RL SCR

The basic configuration of the GP-Probe DIN L1. A perfect option for GNSS interference monitoring. Equipped with relay output and RS232 port for simple integration with external systems

GP-Probe DIN L1 - PPS RL SCR

Configuration for time synchronization quality monitoring. Connect a PPS of your time server and receive real-time notifications of poor synchronization accuracy. GP-Probe DIN L1 - PPS RL SCR equipped with PPS output which provide only validated impulse if there are no any GNSS signal quality issue detected

GP-Probe DIN L1 - PPS BL RL SCR

The full configuration provides end-to-end protection for critical infrastructure. This configuration comes with a validated GNSS output and a built-in RF blocker to protect against GNSS spoofing and signal quality degradation

GP-Probe DIN L1 Software Options

GP-Probe OSP

Onboard signal processing for interference and anomaly detection.
The GP-Probe can work without connecting to the GP-Cloud servers.

GP-Probe LUA

Develop custom scenarios for external equipment remote control via RS232 with the embedded LUA scripting engine.

Optional Accessories

GP-Divider

GNSS power divider with GNSS antenna preamplifier current simulation. It allows you to use one GNSS antenna for two receivers at once.

Resorces

GP-Probe DIN L1 datasheet EN.pdf

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Getting Started Guide

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