P4i HFC Field Analyzer

Kronback Tracers P4i is a Docsis 3.1 compatible returnpath spectrum analyzer with carrier monitoring capability and an excellent Pilot tone generator. Multiple units can work together, providing a complete 1218 MHz sweep system.

A compact housing with ruggedized pushbuttons and a high contrast sun readable display together with a long-lasting battery ensures that the unit is the right choice for demanding HFC field technicians.

Returnpath spectrum analyzer

The Kronback Tracers P4i returnpath analyzer provides a real-time spectrum display ranging from 3 to 204 MHz. It can be placed in the headend/hub site or in street racks for temporary measurement usage. In street racks the 3 inputs can be used to analyze multiple HFC branches for noise.

Downstream carrier monitor

Downstream carriers can be monitored within the 50-1218 MHz range. Precise readout of analog and digital carriers is presented online.

Sweep system

The P4i features a powerful up- and downstream sweep system supporting the full returnpath range of 3-204 MHz and downstream from 50 up to 1218 MHz. Together with the powerful X16 headend unit, a full and precise network alignment can be performed effectively.

Pilot tone generator

The P4i provides 2 pilot tones for precise network alignment. Each pilot tone can be set frequency and level agile within the full 3-1218 MHz range.

Sun read display

A state of the art QVGA color display ensures a precise and pleasant readout of the P4i. The display is anti-reflective and ensures excellent working conditions, even in direct

sunlight exposure.

Smartphone and tablet support

The P4i can be accessed via the built in Bluetooth antenna or via Ethernet.




​Input 1-3 & I/O

  • Connector: F-type 75 Ohm, AC coupled. 100V DC isolation
  • Frequency response: 3-1218 MHz
  • Return loss return path: >18 dB
  • Return loss downstream: 18 dB@40 MHz, - 1,5 dB/oct
  • Isolation: >60 dB


  • Frequency range: 3-1218 MHz
  • Frequency steps: 10 kHz
  • Frequency error: <5 kHz
  • Level range: 30 dBuV – 104 dBuV
  • Level steps: 1 dB
  • Level error: <1 dB


  • F-type 75 Ohm, AC coupled
  • Ethernet: RJ45
  • USB connector: USB type micro-B


  • Charging status

LCD display

  • Backlight colour: White
  • Display mode: TFT, QVGA dimension 55 mm x 41 mm
  • Viewing angle Horizontal: >70 deg
  • Vertical: >65 deg

Physical specifications

  • Height: 140 mm
  • Width: 83 mm
  • Depth: 23 mm
  • Weight: 422 g


  • Remote
  • Web
  • SNMP
  • USB
  • FTP
  • Bluetooth
  • Local control
  • Pushbuttons


  • Max. power consumption: 6 Watt
  • USB power: 5 V
  • Max USB current draw: 1500 mA
  • Fuse: Internal autofuse
  • Power over Ethernet, IEEE803.2af (pin 4.5)


  • IEEE 802.3 10Base-T Ethernet
  • IEEE 802.3u 100Base-Tx Ethernet
  • Fixed IP address and DHCP support


  • Operating temperature: 5°C ~ 45°C
  • Storage temperature: -20°C ~ 55°C
  • Operating humidity: 10% ~ 90%, non-condensing


  • Type: Li-ion, rechargeable
  • Nominal voltage: 3.7 V
  • Minimum capacity: 3.4 AH @ C/5 Rate @ 23 ° C
  • Cycle life: > 500 cycles
  • Memory: No memory effect
  • Operating temp: -20 ° C to 60 ° C
  • Safety: Meets UL1642 standard
  • Transportation: Excepted from regulations​


​Kronback Tracers

CVR: 27638538
Filmtorvet 70
DK-3500 Værløse

Phone: (+45) 46 907 909

E-mail: sales@kronback.com


Quality and flexibility are keywords at Kronback Tracers. Since 2006 they have developed equipment dedicated for the CATV industry.