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Instructions

TCA75
75 to 50 Ohm Impedance Conversion Adapter

071-1192-00

*P071119200*

071119200

There are no current European directives that
apply to this product. This product provides cable
and test lead connections to a test object of
electronic measuring and test equipment.

Warning

The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.

www.tektronix.com

Summary of Contents for TCA75

Page 1: ...duct This product provides cable and test lead connections to a test object of electronic measuring and test equipment Warning The servicing instructions are for use by qualified personnel only To avo...

Page 2: ...ued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 500 Beaverton OR 97077 TE...

Page 3: ...tions This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this...

Page 4: ......

Page 5: ...sure that the product is properly grounded Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings inf...

Page 6: ...or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you re...

Page 7: ...ales support 1 800 833 9200 select option 1 Service support 1 800 833 9200 select option 2 Technical support Email techsupport tektronix com 1 800 833 9200 select option 3 6 00 a m 5 00 p m Pacific ti...

Page 8: ...Contacting Tektronix iv TCA75 Impedance Adapter Instructions...

Page 9: ...the TekConnect interface while minimizing aberrations and reflections The TCA75 adapter fully complies with ANSI T1 102 and ITU T G 703 Front view Figure 1 TCA75 Adapter CAUTION The TCA75 adapter cont...

Page 10: ...features a spring loaded latch that indicates a reliable connection has been made to the TekConnect host instrument Slide the TCA75 adapter into the TekConnect receptacle on the host instrument The u...

Page 11: ...A75 adapter accepts a 75 male BNC connector The signal input cable source must be 75 See Table 2 for typical 75 signal sources Table 2 Input signal connections Impedance Standard Data rate Mb s 75 D 1...

Page 12: ...C derate at a linear rate to 2 0 and 50 C n Output impedance 50 1 5 at DC and 25_ C derate at a linear rate to 2 0 and 50_C n Attenuation accuracy DC 2 46X 1 5 at DC 6 dB pwr Bandwidth 3dB typical 4...

Page 13: ...ce Conversion Adapter Instructions 5 Frequency 10 MHz 1 GHz 60 0 8 10 GHz 100 MHz 55 50 35 25 40 45 15 5 0 10 20 30 1 2 1 4 1 5 1 3 1 1 1 0 0 9 0 7 0 6 0 5 0 4 0 3 0 0 2 0 1 VSWR Return loss dB Return...

Page 14: ...TCA75 Impedance Conversion Adapter 6 TCA75 Impedance Conversion Adapter Instructions...

Page 15: ...Power supply 1 VDC out across 75 with 0 5 mV resolution Wavetek 9100 Digital multimeter 2 5 1 2 digit with sense 4 wire 50 and 75 0 1 DCV 1 V and 200 mV 0 1 Keithley 2000 or Fluke 884X SMA to BMA adap...

Page 16: ...llows Multimeter Setting Mode 4 Wire Range 100 2 Connect the TCA75 adapter as shown in Figure 4 50 00 Multimeter BNC to SMA adapter SMA to BMA adapter 75 Termination SMA barrel 50 BNC cable BNC to ban...

Page 17: ...ct the TCA75 adapter as shown in Figure 5 75 00 Multimeter 75 T adapter SMA barrel SMA to BMA adapter 50 Termination 015 1022 01 TCA75 Adapter 75 BNC cable BNC to banana adapters 75 BNC cable Figure 5...

Page 18: ...as shown in Figure 6 SMA to BMA adapter Multimeter 1 Power supply 1 000 V 75 BNC cable Multimeter 2 407 V 1 000 V 50 BNC cable SMA barrel SMA to BNC adapter 50 Termination 011 0049 02 75 T adapter TCA...

Page 19: ...es the probe calibration output signal and probe calibration feature of the oscilloscope 1 Connect the TCA75 adapter to any channel on the oscilloscope 2 Connect a 75 coaxial cable between the TCA75 a...

Page 20: ...chnician TCA75 Performance Test Minimum Incoming Outgoing Maximum Output impedance 50 1 5 49 25 __________ __________ 50 75 Input impedance 75 1 5 73 875 __________ __________ 76 125 Attenuation accur...

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