Models 181T and TR are general purpose, variable persistence
storage oscilloscope mainframes with plug-in capability. The
instruments, as shipped from the factory, are intended for
bench use. The Model 181TR can be rack mounted as described
in Section II.
The storage feature can be used to store singleshot
occurrences for later viewing or photographing. Comparison
of waveforms can be accomplished by storing several separate
occurrences and later viewing them simultaneously.
The horizontal amplifier has a direct-coupled bandwidth of
dc to 5 MHz. The ac-coupled bandwidth is 5 Hz to 5 MHz with
a dynamic range of ±20 volts. The amplifier has front-panel
selectable deflection factor ranges of 1 V/div (XI), 0.2
V/div (X5) and 0.1 V/div (X10). A vernier control provides
continuous adjustment between ranges. A front-panel BNC
connector permits the use of external deflection signals.
The external input impedance is 1 megohm shunted by
approximately 30 pF.