Teleproject

Radiating-cable continuity monitoring

TP-CCV2

The TP-CCV2 system monitors, in real time, the electrical continuity of the coaxial and radiating cables connected to the base stations that distribute radio signals inside tunnels. Patented Teleproject technology.

Multi-tunnel via ETPCV24 outputs per board19″ rack-mount
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Technical datasheet

TP-CCV2

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The product

Radiating cable continuity, measured in real time.

The TP-CCV2 system monitors, in real time, the electrical continuity of the coaxial and radiating cables connected to the base stations that distribute radio signals inside tunnels. The system can detect a radiating-cable fault in real time, with a short-circuited line in the event of fire, or an open line in the event of a break or a faulty junction connector.

Our system is designed for fast, easy installation inside the rack that houses the base stations. With this reliable, effective solution you can protect the communication infrastructure and maintain a high level of connectivity and performance, even in the harshest operating conditions. The technology is protected by a Teleproject patent.

TP-CCV2 — rack-mount monitoring board with four BNC outputs
100+
tunnels monitored
4
outputs per board
12VDC
supply voltage
Patented
technology
The product

What it does.

Continuously monitors the electrical continuity of the radiating cable and coaxial lines, detecting short circuits and open lines in real time.

Continuous measurement, not sampled

Permanent electrical reading of the line — no blind intervals, no periodic sampling. A fault is detected the instant it occurs.

Two fault types

Short circuit (fire, cable crush) and open line (break, defective junction connector). Both are detected with a single measurement.

Patented

Both the TP-CCV2 board and the ETPCV2 multi-tunnel extension are protected by the Teleproject patent.

In the field

In the same rack as the radio equipment.

Installed in the same cabinet as the radio base stations — a four-output board, powered at 12 VDC.

Features

Key features.

Six functional areas cover radiating cable continuity monitoring in every configuration, from a single tunnel to multi-tunnel installations.

Continuous real-time monitoring

Continuous, non-sampled electrical measurement of the radiating cable continuity. No blind intervals, no periodic sampling.

Short circuit detection

Identifies a line short circuit in real time — typically caused by fire or mechanical crushing of the cable.

Open line detection

Identifies cable breaks or defective junction connectors, with immediate notification to the control room.

Multi-tunnel configuration

The ETPCV2 extension board scales monitoring to multiple tunnels from a single rack cabinet.

Dedicated passive components

The TP-035 DC Insert and TP-035A DC Exit inject the measurement signal without interfering with the radio frequencies.

Patented technology

TP-CCV2 and the ETPCV2 extension board are protected by the Teleproject patent.

Components

System components.

Four elements make up the measurement chain: the control board, the multi-tunnel extension, and two dedicated RF passives. Each plays a precise role in the measurement circuit.

TP-CCV2 — monitoring board with four BNC outputs
TP-CCV2Patented
Main board

The heart of the system. The TP-CCV2 board injects a low-value direct current onto the radiating cable and monitors its continuity in real time: the moment the reading changes, the alarm fires. Four BNC outputs, one per cable being monitored.

Outputs
4 × BNC
Power supply
12 VDC · 2 W
Format
19″ rack
Protection
Teleproject patent
ETPCV2 — multi-tunnel extension board
ETPCV2Patented
Multi-tunnel extension

When the same radiating cable runs through multiple tunnels in sequence, the ETPCV2 extends the measurement across each section. It connects directly to the TP-CCV2 — powered by the main board, no additional power supply needed — and replicates the measurement without adding complexity to the installation.

Function
Multi-tunnel
Power supply
From TP-CCV2
Connection
Direct to main board
Protection
Teleproject patent
TP-035 — RF passive for DC current injection onto the radiating cable
TP-035DC Insert
RF passive · cable head

The passive component that injects the DC measurement current onto the radiating cable. Installed at the cable head, on the radio equipment side, it passes radio signals from 50 to 500 MHz up to 200 W without any interference.

Band
50 – 500 MHz
Power
200 W
Function
DC injection
TP-035A — RF passive for DC extraction when the cable terminates at an antenna
TP-035ADC Exit
RF passive · cable end

The companion to the TP-035, closing the circuit when the radiating cable terminates at an antenna. Installed at the cable end, it extracts the DC measurement current before it reaches the radiating element. Same band and power rating as the TP-035 — required only in antenna-terminated configurations.

Band
50 – 500 MHz
Power
200 W
Function
DC extraction
Diagram

Installation diagram.

Two topologies depending on what terminates the radiating cable — a load or an antenna. The TP-CCV2 board and the TP-035 passive are common to both; the TP-035A is only required when the cable terminates at an antenna.

Topology A

Load at radiating cable end

TP-CCV2 · TP-035 · 50 Ω load
TP-CCV2 diagram — radiating cable terminated on a 50 Ω load, DC current injected via TP-035

The TP-035 injects the direct current at the radiating cable head. The cable terminates on a 50 Ω load: the current travels the full length of the line and returns to the TP-CCV2 board, which compares it in real time against the expected value.

Topology B

Antenna at radiating cable end

TP-CCV2 · TP-035 · TP-035A · antenna
TP-CCV2 diagram — radiating cable terminated at an antenna with TP-035A at the tail

When the cable terminates at an antenna, the TP-035A at the tail extracts the direct current before it reaches the radiating element. The measurement circuit closes between the TP-035 and TP-035A, while the radio signal continues unimpeded to the antenna.

06 · Technical specifications

Technical specifications.

Control board specifications and EMC compliance — reproduced faithfully from the official datasheet and test report.

01 · Board specificationsPower supply · Outputs · Installation
Power supply
12 VDC, max 2 W
Input voltage
12 VDC
Max power
2 W
ETPCV2
Powered by the TP-CCV2 board
Outputs and format
Four BNC outputs per board
Outputs per board
4 × BNC
Format
19″ rack
Extension
ETPCV2 board for multi-tunnel
Alarms per board
4 (one per output)
Installation
In the same rack as the radio equipment

  • Radio base station rack cabinet

  • TP-035 DC Insert at cable head

  • TP-035A DC Exit if cable terminates at antenna

  • Expandable to multiple tunnels via ETPCV2

02 · ComplianceCE · EN IEC
Marking
CE
Directive
2014/30/EU (EMC)
EMC (emission)
IEC 61000-6-3:2020
EMC (immunity)
EN IEC 61000-6-2:2019
ESD immunity
EN 61000-4-2
Use cases

Use cases.

Where TP-CCV2 is already in operation — highway and railway tunnels.

  • TP-CCV2 installed in a highway tunnel — isometric rendering

    Highway tunnels

    Monitoring of the radiating cables for highway radio networks, the traffic police, fire service, and 112 emergency services.

  • TP-CCV2 installed in a railway tunnel — isometric rendering

    Railway tunnels

    Continuous monitoring of the radiating cables for operational and GSM-R networks inside railway tunnels.

Protect tunnel coverage

The radiating cable cannot fail. Not even once.

Patented Teleproject technology, already in operation in more than 100 highway tunnels.

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