Tektronix 2246 Operator's Manual page 7

Specification-—— 2246 Operators
Table 1-1
Electrical Characteristics
Characteristics l | Performance Requirements
VERTICAL DEFLECTION SYSTEM—CH 1 AND CH 2
Deflection Factor
Range 2 mV/div to 5 V/div in 1-2-5 sequence.
Accuracy (includes ADD MODE
and CH 2 INVERT)
15 to 35°C Within + 2%.
—10°C to 15°C and 35°C to 55°C Within +3%.
Variable Range Increases deflection factor by at least 2.5:1.
Frequency Response (—3 dB bandwidth}
~10°C to 35°C DC to 100 MHz (at the probe tip).
35°C to 55°C DC to 90 MHz {at the probe tip).
AC Coupled Lower —3 dB Point
1X Probe 10 Hz or less.
10X Probe 1 Hz or less.
Step Response (5-division step)
Rise Time
— 10°C to 35°C 3.5 ns or less.
35°C to 55°C 3.9 ns or less.
Delay Match (CH 1 to CH 2) Less than 200 ps difference.
Common Mode Rejection Ratio (CMRR) At least 10:1 at 50 MHz for signals of eight divisions or less with
VOLTS/DIV VAR adjusted for best CMRR at 50 kHz.
Channel isolation
(Attenuation of deselected channel) 10 MHz 100 MHz
2 mV/Div to 0.5 V/Div 50 dB or more. 34 dB or more.
l Channel isolation tested with eight-division input signal.
Trace Shift as VAR VOLTS/DIV is Turned 1 division or less.
Invert Trace Shift 1 division or less.
Trace Shift Between VOLTS/DIV Switch Positions 0.2 division or less.
Trace Shift Between GND and DC Input Coupling
—10°C to 35°C Less than 0.5 mV.
35°C to 55°C Less than 2 mV.
Position Range At least + 11 divisions from graticule center.
Input Characteristics
Resistance 1 MQ +0.5%.
Capacitance 20 pF +1.0 pF.
Capacitance Match Between
Within +0.5 pF.
Any Two VOLTS/DIV Settings
in Each Channel
Max Input Volts A 400 V (dc + peak ac); 800 Y p-p ac at 10 kHz or less.
1-2 l REV MAR 1988