AN/USM-488

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Tektronix AN/USM-488
100 MHz dual-trace portable scope
AN/USM-488

Produced from 1985 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The AN/USM-488 is an oscilloscope made my Tektronix for the US Department of Defense. It closely resembles a 2235.

Does it differ at all?

Specifications

Bandwidth 90 MHz at 2 mV/Div, 100 MHz at 5 mV/Div and above; switchable 20 MHz limit
Rise time 3.9 ns at 2 mV/Div, 3.5 ns at 5 mV/Div and above
Deflection 2 mV/Div to 5 V/Div, 1−2−5, ±2%, and variable 2.5:1
Time base 50 ns/Div to 500 ms/Div (B timebase to 50 ms/Div), 1−2−5,  ×10 magnifier for fastest deflection of 5 ns/Div
Input impedance 1 MΩ // 20 pF
Trigger sensitivity 0.3 Div or 35 mV up to 10 MHz, 1 Div or 120 mV up to 60 MHz, 1.5 Div or 200 mV up to 100 MHz
CRT 80×100 mm² display area, P31 phosphor, 14 kV acceleration voltage
Power 90−250 VAC, 48 to 440 Hz, 40 W
Size 137 mm × 327 mm × 440 mm (5.4" × 12.9" × 17.3")
Weight 5.2 kg (11.5 lb) without accessories
Features
  • Delayed timebase
  • X−Y mode
  • Z input