4701
The Tektronix 4701 is a multiplexer introduced in 1971 that allows several signals to be displayed on a single oscilloscope or captured with a recording instrument. The 4701 contains logic for round-robin switching between the inputs.
Each of the eight inputs to the Tek 4701 is differential. Each differential input signal goes into a discrete amplifier using a 151-1036-00 dual n-channel JFET. The output of the discrete amplifier is fed to another differential amplifier, this one using a CA3030 opamp. This second stage converts the differential signal to single-ended and provides a low output impedance. The low-impedance single-ended signal is fed to a diode switch. There is a summing junction where the outputs of the diode switches meet, thus forming the multiplexer. An output amplifier buffers the voltage on the summing junction, producing the low-impedance output for the rear panel connector.
Key Specifications
- please add
The signal path bandwidth is DC to 1 MHz.
Links
Documents referencing 4701
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| History of the Information Display Division - John Lamb, June 1974.pdf | Article | History of the Information Display Division | John Lamb | 1974 | Information Display Division • 601 • 611 • 602 • 4002 • 4501 • 4005 • 4601 • 4901 • 4951 • 4002A • 4551 • 4701 • Tekplot • 4602 • 4010 • 4610 • 4911 • 4912 • 613 • 4903 • 4012 • 4013 • 4014 • 4015 • 4023 • 4503 • 4921 • 4922 • 4953 • 4954 |
