Tektronix 2440, User Manual

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Specification— 2440 Service
Table 1-1 (cont)
Characteristics
Performance Requirements
TIME BASE
Sample Rate Accuracy
Average Over 100 or More Samples
± 0.0015% .a
External Clock
Repetition Rate
Minimum
1 MHz.®
Maximum
100 M H z.a
Events Count
1 to 65,536®
Events Maximum Repetition Rate
100 MHz.®
Signal Levels Required for EXT Clock or EVENTS
Channel 1 or Channel 2 SOURCE
DC Coupled
0.7 division from DC to 50 MHz; increasing to 2.0 divisions at
100 MHz; 3.0 divisions at 100 MHz in ADD mode.®
NOISE REJ Coupled 2.4 divisions or less from DC to 50 MHz; increasing to 6.0 divi­
sions at 100 MHz; 9.0 divisions at 100 M Hz in ADD mode.®
AC Coupled 0.7 division from 60 Hz to 50 MHz; increasing to 2.0 divisions at
100 MHz; 3.0 divisions at 100 MHz in ADD mode. Attenuates sig­
nals below 60 Hz.®
HF REJ Coupled
1.0 division from DC to 30 kHz. Attenuates signals above
30 kHz.®
LF REJ Coupled 1.0 division from 80 kHz to 50 MHz; increasing to 2.0 divisions at
100 MHz; 3.0 divisions at 100 MHz in ADD mode. Attenuates sig­
nals below 80 kHz.®
EXT TRIG 1 or EXT TRIG 2 Source
Ext Gain = 1
DC Coupled 35 mV from DC to 50 MHz; increasing to 100 mV at 100 MHz.®
NOISE REJ Coupled 120 mV or less from DC to 50 MHz; increasing to 300 mV at
100 MHz.®
AC Coupled 35 mV from 60 Hz to 50 MHz; increasing to 100 mV at 100 MHz.
Attenuates signals below 60 Hz.®
HF REJ Coupled 50 mV from DC to 30 kHz.®
LF REJ Coupled 50 mV from 80 kHz to 50 MHz; increasing to 100 mV at
100 MHz.®
Ext Gain = -=- 5 Amplitudes are five times those specified for Ext Gain = 1.®
1-13
‘ Performance Requirement not checked in the manual.