CMDM 8700 D | Schwarzbeck | 9 kHz–108 MHz | Common-Mode and Differential-Mode Isolator

Product Description:

The CMDM 8700 D is the latest common-mode and differential-mode isolation device released by the German company Schwarzbeck in 2026. It can be used to combine and analyze two single-wire LISNs (such as single-wire high-voltage artificial networks in automotive electronics). NNHV 8123-800) The conducted interference signals are output, and then the single-ended, common-mode, and differential-mode signals are manually adjusted and displayed on a spectrum analyzer to assist EMC test engineers in debugging and rectifying products that exceed conducted interference limits.

Test Connection Diagram for the CMDM 8700 D Common-Mode and Differential-Mode Isolator with a Spectrum Analyzer and LISN

In principle, this product will replace the existingCMDM 8700 B...but there has been no official announcement yet. The difference between the two lies in the different voltage division factors listed in the product specifications.

The CMDM 8700 D circuit diagram shows a voltage division factor of 10 dB.

Typical Use Cases:

• Conducted EMI Testing of High-Voltage Automotive Electronic Components (On-Board Power Supplies, BMS, Motor Controllers)
• Common-Mode/Differential-Mode Noise Separation and Source Identification in Single-Wire LISN Systems
• Laboratory Pre-Compliance Testing, EMI Interference Localization, and Remediation Verification
• Meeting the diagnostic requirements for conducted emissions under automotive EMC standards

Technical parameters：

Product Specification Sheet:

CMDM 8700 D Transmission Coefficient

Order Number: EUTS0903