CISPR 16-1-3 Absorbing Clamp

Product No: AB-CLP

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The AB-CLP power absorption clamp consists of three core parts: a current transformer, a clamp-on ferrite absorber, and a ferrite tube absorber. It can be connected to LISUN EMI-9K series receivers and other brand receivers via an N-type interface. Through the coordinated action of these components, it achieves the sampling, absorption, and measurement of electromagnetic interference power, accurately capturing interference signals from the tested conductor. It is widely applicable to EMC compliance testing in industries such as home appliances, power tools, and electronic components.

Construction of AB-CLP Power Absorption Clamp

Standards:

Standards No.	Standards Name
CISPR 16-1-3:2020	Specification for radio disturbance and immunity measuring apparatus and methods – Part 1-3: Radio disturbance and immunity measuring apparatus – Ancillary equipment – Disturbance power
CISPR 16-2-2:2013	Methods of measurement of radio disturbance characteristics – Part 2-2: Measurement of disturbance power
VDE 8079 / CISPR 25:2021	Methods of measurement and limits for radio disturbance characteristics for the protection of receivers on board vehicles
CISPR 12:2025	Vehicles, boats and devices with internal combustion engines or traction batteries – Radio disturbance characteristics – Limits and methods of measurement for the protection of off-board receivers
DIN 47250	Measurement of shielding dimensions of coaxial cables between 30MHz and 1000MHz for high-frequency cables and wires
EN 50083-2:2012	Cable networks for television signals, sound signals and interactive services – Part 2: Electromagnetic compatibility of equipment
GB/T 6113.103-2021	无线电骚扰和抗扰度测量设备和测量方法规范第 1-3 部分：无线电骚扰和抗扰度测量设备辅助设备骚扰功率
GB/T 6113.202-2021	无线电骚扰和抗扰度测量设备和测量方法规范第 2-2 部分：无线电骚扰和抗扰度测量方法骚扰功率测量
GB/T 12269-1990	射频电缆 — 第 1 部分：一般要求及测量方法

Specifications:

Frequency Fange	30MHz~1000MHz
Output Impedance	50Ω
Permissible Cable Diamete	≤20mm
signal Connector	N type
Absorbing Clamp Insertion Loss A	13dB~21dB
Absorption Clamp Factor CF (correction value K)	-4dB~4dB
Decoupling Factor DF	≥21dB
Decoupling Factor DR	≥30dB
External Dimensions	640mm109mm100mm（LWH）
Equipment Weight	5KG
Third-party Calibration Report (optional)	AB-CLP Power Absorption Clamp ISO17025 CNAS Calibration Certificate Sample

Brief Operating Procedures:
The AB-CLP power absorption clamp must be used in conjunction with a LISUN EMI-9K series receiver or other brand receivers. The entire test must comply with CISPR16-2-2/GB6113.202 standards. The steps are as follows:

1. Pre-test Preparation: Read the absorption clamp factor CF (correction value K) from the accompanying correction factor table and input it into the EMI receiver. If the coaxial cable insertion loss is high, add it to the K value. Turn on the EMI receiver and allow it to warm up for 10 minutes until stable.

2. Test System Setup: Place the absorbing clamp on a 0.8-meter-high insulated slide rail. Connect the output end to the receiver via a 6dB attenuator and a 50Ω coaxial cable. Place a 0.8-meter-high insulated platform on a desktop EUT (refer to Figure 8 of CISPR 16-2-2:2013), and a 0.1-meter-high insulated mat on a floor-standing EUT (refer to Figure 9 of CISPR 16-2-2:2013). Straighten the conductor under test and place it horizontally into the center hole of the absorbing clamp, securing it tightly (bare wire wrapped with insulating tape, minimum conductor length 7.5 meters). Adjust the minimum distance between the slide rail reference point (SRP) and the clamp reference point (CRP) to (10±1) cm.

3. Formal Test: Turn on the EUT power to ensure normal operation. Move the absorbing clamp along the slide rail and read the maximum value from the receiver at each test frequency as the test result, completing the full-band test.