Tektronix 2247A

4
8
4
Performance Characteristics
Table 6-1 (cont)
Electrical Characteristics
CHARACTERISTICS PERFORMANCE REQUIREMENTS
Delay Match
(CH 1 to CH 2)
Less than 200 ps difference.
Common Mode Rejection
Ratio (CMRA)
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)
2 mV/dlv to 0.5 V/div
Trace Shift as VAR
VOLTS/DIV Is Turned
10 MHz 100 MHz
$0 db 34 dB
or more or more
Channel isolation tested with elght-division
Input signal.
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
35°C to 55°C
Input Characteristics
Less than 0.5 mV.
Less than 2 mv?
Resistance 1MOQ +1.0% 2
Capacitance 20 pF +1 pF?
Capacitance Match +0.5 pF.
Between Any Two
VOLTS/DIV Settings
Maximum Input
Volts
400 V (dc + peak ac); 800 V p-p at 10 kHz
or less.4 (See Figure 6-1.)
Performance Requirement not checked in manual.
2247A Operators
6-3