D4STP is a high-density DOCSIS 4.0 stability test platform designed to operate 24–36 cable modems simultaneously under long-duration reliability conditions. It supports automated configuration, continuous performance monitoring, controlled impairments, and multi-day stress testing for validating modem stability and interoperability.
DOCSIS4.0 Cable Modem Stability Test System - D4STP
- Supports 32 x DOCSIS CPE Units
- All CPE unit with Individual 75ohms RF cables, controllable power plug, and Ethernet connection
- Supports all DOCSIS3.1, DOCSIS4.0 FDD and FDX band splits and switchable diplexers
- Integrates DOCSIS3.1/4.0 Node in the rack as well as remote CMTS connections through an integrated CMTS RF switch device
- Integrates frequency slope / Tilt equalizer up to 1794MHz in Downstream and up to 684 and 884 MHz in Upstream with 6 different profiles for Downstream and 4 different profiles for Upstream
- Variable level AWGN Noise floor with Separate source for Downstream and Upstream. From -50dBmV to +10dBmV/6MHz in Downstream and -30 to +30dBmV/1.6MHz in Upstream
- Separate Downstream and Upstream Multipath / micro reflections based on real Cable and taps
- Programmable Impulse Noise with controllable frequency, power level and duration
- Multiple bidirectional 10Gbps Ethernet packet generator sent in Downstream and Upstream in broadcast, multicast or unicast mode
- Double RF spectrum analyzer for Channel power level accurate measurements, Noise level measurements and Upstream Burst capture
- Simple User Interface enabling test scenario programming and playback
- Individual CPE monitoring and log file
- Set of defined APIs that allow any software application to interact with the equipment, retrieve detailed information and execute equipment test commands