Maximum Input Level; Full Scale Ranges; Selectable Dc Offset; Coupling - Tektronix 2642A Reference

Introduction
1-14
2642A Specifications
Maximum Input Level
Protected to ±30 volts, BNC center conductor to chassis or BNC shell
Protected to ±0.6 volts. BNC shell to chassis
Full Scale Ranges
20 ranges. ±14 mV to ±10 Volts (peak) full scale in 3 dB steps
Manual or auto ranging
Selectable DC Offset
Range:
±
10 volts
Accuracy: 0.05% of setting. ±2 mV
Resolution: better than 10 m V
Coupling
AC: single pole RC. -3 dB@ 0.8 Hz ±10%
DC
Accel. bias: 2 mA±IO% ,+13
V Max
Output source: internal connection to 2642A output before output 50
Ohm source resistor
DC Offset
<
0.05% of full scale range ±0.5 m V
(after auto-calibration cycle. 50 Ohm source)
Anti-Alias Filtering
Type: fixed ninth order analog elliptic filter followed by real-time
digital filtering providing 80 dB minimum alias protection over all
analysis bands
Ripple: DC to JOO kHz ±0.15 dB; 100 kHz to 200 kHz±0.2 dB