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TBCP1-250
RF CURRENT MONITORING PROBE
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1 Introduction
The TBCP1-250 is a fixed aperture RF current monitoring probe, expanding the Tekbox
product range of affordable EMC pre-compliance test equipment.
The probe has a very flat response with a 3dB bandwidth of 250 MHz and is characterized and
usable over the frequency range from 30kHz to 250 MHz.
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TBCP1-250
RF CURRENT MONITORING PROBE
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The aperture of the RF current monitoring probe is 25 mm. Its transfer impedance is > 16 dB
Ohm in the range from 300 kHz to 250 MHz.
2 Specification
Characterized frequency range: 30 kHz to 250 MHz
Aperture diameter: 25 mm
Outside diameter: 76 mm
Height: 31 mm
Weight: 320 g
Connector type: N female
Transfer impedance: 0 to 18 dBΩ
Max. primary current (DC - 400 Hz): 80 A
Max. primary current (RF): 3 A
Max. core temperature: 125 °C
3 Transfer impedance
Figure1: typical transfer impedance: 30 kHz to 250 MHz, linear
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RF CURRENT MONITORING PROBE
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Figure2: typical transfer impedance: 30 kHz to 250 MHz, logarithmic
4 Typical transfer impedance table
The table below shows typical transfer impedance data of a TBCP-250 current probe. Each
current probe is delivered with its correcponding measurement protocol. This data can be
used for the creation of a correction file for EMCview or similar EMC measurement software.
The transfer impedance in dBΩ subtracted from the analyzer reading in dBµV gives the
corrected reading in dBµA.
Refer to the application notes of EMCview on how to create a current probe correction file.
Frequency [MHz]
transfer impedance [dBΩ]
Frequency [MHz]
transfer impedance [dBΩ]
0.03
-0.79
10
18.01
0.04
2.49
20
17.97
0.05
4.87
30
18.02
0.06
6.65
40
18.04
0.07
8.06
50
18.05
0.08
9.11
60
18.06
0.09
10.07
70
18.06
0.1
10.88
80
18.06
0.2
14.87
90
18.03
0.3
16.43
100
17.91
0.4
17.11
110
17.82
0.5
17.48
120
17.76
0.6
17.67
130
17.65
0.7
17.80
140
17.56
0.8
17.88
150
17.54
0.9
17.94
160
17.53
1
17.95
170
17.52
2
17.93
180
17.52
3
17.94
190
17.53
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TBCP1-250
RF CURRENT MONITORING PROBE
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4
17.93
200
17.53
5
17.93
210
17.51
6
17.95
220
17.46
7
17.97
230
17.15
8
17.99
240
16.64
9
17.98
250
15.91
Table1: Transfer impedance: 30 kHz to 250 MHz
5 Ordering Information
Part Number
Description
TBCP1-250
Fixed aperture RF current monitoring probe, beech-wood
box, calibration protocol
6 History
Version
Date
Author
Changes
V 1.0
6.05.2018
Mayerhofer
Creation of the document
www.tekbox.com
TekBox Digital Solutions Vietnam Pte. Ltd.
Factory 4, F5, Lot I-3B-1, Saigon Hi-Tech Park, Tan Phu Ward, District 9, Ho Chi Minh City, Vietnam
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