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V1.0
TBFL1
TBFL1 TRANSIENT LIMITER
The TBFL1 is a combined transient limiter / attenuator / high pass filter, designed to provide optimum
protection of spectrum analyzer or measurement receiver inputs when carrying out conducted noise
measurements or other measurements where the input levels cannot be predicted with certainty or
where accidental overloads may occur.
© 2017 TEKBOX DIGITAL SOLUTIONS
50/11 TRUONG SON, TAN BINH DISTRICT, HO CHI MINH CITY | TEL +84 (83)5471340 | E-MAIL [email protected] | www.tekbox.net
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V1.0
TBFL1
CONTENTS
TBFL1 MANUAL
1 INTRODUCTION 3
1.1 APPLICATION 3
2 ELECTRICAL SPECIFICATIONS 4
3 ORDERING INFORMATION 7
4 HISTORY 7
TABLES
Table 2 – Ordering Information 7
Table 3 – History 7
PICTURES
Picture 1 – TBFL1 transient limiter, top view 3
Picture 2 – TBFL1 transient limiter, bottom view 3
Picture 3 – TBFL1, attenuation, 9 kHz – 600 MHz 4
Picture 4 – TBFL1, high pass filter response 1 – 20 kHz 5
Picture 5 – TBFL1, input return loss, lS11l,, 30 kHz – 600 MHz 5
Picture 6 – TBFL1, output return loss, lS11l, 30 kHz – 1.5 GHz 6
Picture 7 – TBFL1, attenuation, lS21l, 30 kHz – 1.5 GHz 6
© 2017 TEKBOX DIGITAL SOLUTIONS
50/11 TRUONG SON, TAN BINH DISTRICT, HO CHI MINH CITY | TEL +84 (83)5471340 | E-MAIL of[email protected] | www.tekbox.net
2
Page 3
1. INTRODUCTION
TBFL1 MANUAL
The TBFL1 is a combined transient limiter / attenuator / high pass
filter, designed to provide optimum protection of spectrum analyzer
or measurement receiver inputs when carrying out conducted noise
measurements or other measurements where the input levels cannot be
predicted with certainty or where accidental overloads may occur.
Pin- and schottky diodes combined with a multi-stage 10dB attenuator
result in a device which can withstand a continuous RF input level of up
1.1 APPLICATION
• General purpose RF transient limiter
• Transient limiter for conducted noise measurement set ups
Picture 1 – TBFL1 transient limiter, top view
to 5W (37 dBm). A gas discharge tube provides additional protection
against high voltage transients. Furthermore, a 9 kHz high pass filter
suppresses harmonics of the mains supply voltage.
With a limiting threshold of +11dBm and a flat frequency response from
9 kHz to 600 MHz, the TBFL1 limiter can be used as protective device
for the complete range of conducted noise measurements and in many
other applications.
Picture 2 – TBFL1 transient limiter, bottom view
© 2017 TEKBOX DIGITAL SOLUTIONS
50/11 TRUONG SON, TAN BINH DISTRICT, HO CHI MINH CITY | TEL +84 (83)5471340 | E-MAIL of[email protected] | www.tekbox.net
3
Page 4
2. ELECTRICAL SPECIFICATIONS
Technical Data:
• Frequency range: 9 kHz – 600 MHz
• Attenuation: 10 dB – 0.5/+1.2 dB in-band (9 kHz to 600 MHz)
• Attenuation HP-filter: > 30 dB @ 2kHz
• Maximum continuous RF input power: 5W (+37 dBm) in-band
• Maximum DC input voltage: ± 20V
• Input matching, linear operating range: 9 kHz - 600 MHz < - 16 dB
• Output matching, linear operating range: 9 kHz - 600 MHz < - 23 dB
TBFL1 MANUAL
• Linear operating range: up to 0 dBm input level, in-band
• Limiting threshold: +11 dBm (@ 37dBm input level)
• Input connector: N-female
• Output connector: N-male
• Dimensions: 156 mm x 26 mm x 26mm
• Weight: 170 g
Picture 3 – TBFL1, attenuation, 9 kHz – 600 MHz
© 2017 TEKBOX DIGITAL SOLUTIONS
50/11 TRUONG SON, TAN BINH DISTRICT, HO CHI MINH CITY | TEL +84 (83)5471340 | E-MAIL of[email protected] | www.tekbox.net
4
Page 5
TBFL1 MANUAL
Picture 4 – TBFL1, high pass filter response 1 – 20 kHz
Picture 5 – TBFL1, input return loss, lS11l,, 30 kHz – 600 MHz
© 2017 TEKBOX DIGITAL SOLUTIONS
50/11 TRUONG SON, TAN BINH DISTRICT, HO CHI MINH CITY | TEL +84 (83)5471340 | E-MAIL of[email protected] | www.tekbox.net
5
Page 6
TBFL1 MANUAL
Picture 6 – TBFL1, output return loss, lS11l, 30 kHz – 1.5 GHz
Picture 7 – TBFL1, attenuation, lS21l, 30 kHz – 1.5 GHz
© 2017 TEKBOX DIGITAL SOLUTIONS
50/11 TRUONG SON, TAN BINH DISTRICT, HO CHI MINH CITY | TEL +84 (83)5471340 | E-MAIL of[email protected] | www.tekbox.net
6
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3. ORDERING INFORMATION
PART NUMBER DESCRIPTION
TBFL1 9 kHz – 600 MHz transient limiter / attenuator / high pass lter, beech-wood box
Table 1 – Ordering Information
4. HISTORY
VERSION DATE AUTHOR CHANGES
V1.0 30.8.2017 Mayerhofer Creation of the document
Table 2 – History
TBFL1 MANUAL
© 2017 TEKBOX DIGITAL SOLUTIONS
50/11 TRUONG SON, TAN BINH DISTRICT, HO CHI MINH CITY | TEL +84 (83)5471340 | E-MAIL of[email protected] | www.tekbox.net
7
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