AN/USM-488
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?
- Answer: Yes, there the minor differences in the trigger section such as an HF reject and other differences in where the A source switches would be in the original 2235. The trigger source switches are moved to the middle of the Vertical section on the militarized version. It also has added Uncal indicators. It is more similar to the A model of the 2235 than the basic model.
Key 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 |
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