+1 (650) 494-6444
sales@pearsonelectronics.com

External Termination

When viewing pulse rise times below 100 nanoseconds, RF currents above a few megahertz, or when using long cables, it is advisable to terminate the current monitor output cable at the oscilloscope with 50 ohms to prevent standing waves or cable fill-time effects. With this termination the output voltage will be approximately half the unterminated value, subject to the accuracy of the termination resistance, and the attenuation of the cable.

Fast-rising pulses can produce spurious observed ringing due to high frequency current flowing on the outside of the cable shield. This current can be suppressed by increasing the inductance of the shield run by threading the cable through one or more magnetic cores. Good results have been obtained using three turns through four ferrite cores of about one inch inside diameter, two inch outside diameter and 1/2 inch thickness.

With external termination, models 2877, 4100, 2100, 3100, 150, 410, 411, 110, 110A, and 1010 will exhibit lower droop and increased current time product.

Supporting Documents

Documentation available to answer most technical questions provided below. Please contact us for any additional requirements.

 

Instruction Guides:
* EMI Current Probe Selection
* Current Monitor
* Clamp-On Current Monitors
 

Application Notes:
* How to Select a Current Monitor
* Performance Features
* Typical Applications
* Calibration
* Specifications
* External Termination
* Electrostatic Shielding
* Biasing
* Transient Limitation
* Phase Shift
* High Voltage Consideration
* Insertion Resistance
* Testing Procedure
* Droop Notes
* Inductance Effect
* Noise Suppression
* Rise Time

 

(650) 494-6444
sales@pearsonelectronics.com

 

Particle Accelerator
The Particle Accelerator community uses Pearson Current Monitors for a variety of applications in the area of high . . .
 
Medical Applications
The medical equipment industry uses Pearson Current Transformers in several applications. These include medical. . .
 
Power Industry
The Power Industry uses Pearson Current Transformers to measure transients in switching gear and the observation of. . .
 
EMC Industry
Pearson Clamp-on Current Probes are used to make accurate AC current measurements to meet many of the EMI standards. . .
 
Plasma Research
Pearson Current Probes are used by the Semiconductor and Semiconductor Equipment Industry to make measurements at. . .
 
Capacitive Discharge
Pearson Current Monitors are used to view faithful waveforms and make accurate current measurements from a capacitive. . .
 
Surge Current Testing
Wide Band Current Probes measure surge and in-rush currents for EMC and other industries. A typical requirement. . .
 
Lightning Discharge
Broad Band Current Transformers | Monitors are used to characterize lightning strikes at the Kennedy Space Center and leading. . .
 
Beam Instrumentation
Custom Wide Band Current Monitors are use beam tube applications with our large aperture clamp-on Current Monitors. . .