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7A14: Difference between revisions
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The '''Tektronix 7A14''' is a 120 MHz current probe amplifier vertical plug-in intended | The '''Tektronix 7A14''' is a 120 MHz current probe amplifier [[7000-series scopes|7000 series]] | ||
vertical plug-in intended for use with current probes such as the [[P6021]] and [[P6022]]. | |||
The 7A14 is one of the original plug-in modules introduced at the start of the 7000 series in 1969. | |||
In the 7A14, the ring around the input [[BNC connector]] that is used to identify ×10/×100 probes on voltage probes serves the purpose of detecting the difference between the P6021 and P6022 probes, and switching in appropriate gain and frequency compensation. | In the 7A14, the ring around the input [[BNC connector]] that is used to identify ×10/×100 probes on voltage probes | ||
serves the purpose of detecting the difference between the P6021 and P6022 probes, | |||
and switching in appropriate gain and frequency compensation. | |||
The P6021 shorts this ring to ground, directly switching three relays connected to -15 V internally. | |||
The front panel gain control screwdriver adjustment affects gain for either P6021 or P6022. | The front panel gain control screwdriver adjustment affects gain for either P6021 or P6022. | ||
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The 7A14 uses twelve Tek-made [[miniature relays]] that can be a service issue. | The 7A14 uses twelve Tek-made [[miniature relays]] that can be a service issue. | ||
The amplifier is an 8-stage discrete differential design. | The amplifier is an 8-stage discrete differential design. | ||
The plug-in contains no integrated circuits. | |||
==Prices== | ==Prices== | ||