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.
Pictures
Custom ICs used in the 4701
| Page | Model | Part nos | Description | Designers | Used in |
|---|---|---|---|---|---|
| 155-0028-00 | M018 | 155-0028-00 • 155-0028-01 • 155-0042-00 • 155-0042-01 • 155-0042-02 • 155-0042-03 | Miller integrator and delay pickoff | Joe Burger | 5030 • R5030 • 5031 • R5031 • 1401 • 1401A • 1480 • 1481 • 1482 • 1485 • 26G1 • 26G2 • 26G3 • 314 • 335 • 432 • 434 • 4701 • 5B10N • 5B12N • 5B31 • 5B40 • 5B42 • 5S14N • 7B52 • 7B53A • 7B53N • 7L12 • 7L13 • 7L14 • 7L18 • 7S14 • AN/USM-281C • RG501 • Telequipment D63 • Telequipment DM63 |
| 155-0029-01 | 155-0029-00,155-0029-01 | 155-0029-01 | Trigger | 26G1 • 26G2 • 26G3 • 4701 • 5030 • R5030 • 5031 • R5031 • 5B10N | |
| 155-0056-00 | M042E | 155-0056-00 • 155-0056-01 | sweep control | Val Garuts | 26G1 • 26G2 • 26G3 • 314 • 4701 • 5B10N • 5B12N • 5S14N • 7L5 • 7L12 • 7L13 • 7L14 • 7L18 • 7S14 • RG501 • Telequipment D63 • Telequipment DM63 |