475

Manuals – Specifications – Links – Pictures

The Tektronix 475 is a portable dual-trace oscilloscope with dual time-bases similar to the 465, but with 200 MHz bandwidth and a maximum vertical sensitivity of 2 mV/Div. It is all solid-state except for the CRT. It was introduced in November 1972.

A revised version, the 475A, has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. The 1106 is a battery pack for the 475.

The optional DM44 multimeter attaches to the top of the instrument.

Key Specifications

{{Spec | Time base |

Bandwidth	200 MHz (475), AC cutoff 10 Hz, switchable BW limit 20 MHz
Rise time	1.75  ns (475)
Deflection	2 mV/Div to 5 V/Div, 1-2-5
Cascaded mode	400 μV/Div, 50 MHz with CH1 input connected to CH2 VERT SIG OUT
Input impedance	1 MΩ // 20 pF
Triggering	0.3 Div (int) or 50 mV (ext) to 40 MHz, increasing to 1.5 Div/250 mV at 200 MHz; AC coupling >60 Hz; LF REJ >50 kHz, HF REJ <50 kHz

Internals

The 475 uses a number of Tek-made integrated circuits, including the 155-0032-01 input preamplifier, 155-0085-00 input amplifier, 155-0078-00 vertical amplifier, 155-0091-00 channel switch, 155-0082-00 vertical output amplifier, and 155-0049-00 sweep control.

Links

• The New Look in Portables, in Tekscope Vol. 4 No. 5, 1972
• Tek 475 / Tek 475A @ amplifier.cd
• Tek 475A in operation @ YouTube

Pictures

• 

  Tektronix 475A

• 

  Tektronix 475A