Tektronix 2247A Operator's Manual page 144

Performance Characteristics
Table 6-1 (cont)
Electrical Characteristics
CHARACTERISTICS
PERFORMANCE REQUIREMENTS
Sensitivity—CH 1 through
CH 4: AUTO LEVEL and
NORM
COUPLING
bc
NOISE REJECT
HF REJECT
LF REJECT
AC
TV LINE
Channel Isolation
(attenuation of
deselected channel)
CH 1 or CH 2 to
Any Other Channel
CH 3 or CH 4 to
Any Other Channel
B TRIGGER
Trigger sensitivity is defined as the minimum
peak-to-peak sine-wave trigger signal
amplitude required to show the test signal
with horizontal jitter of less than 3.0% of
one period (p-p viewed over two seconds),
with Trigger LEVEL control set at mid-
level, but not at control extremes.
0.35 division from de to 10 MHz: Increasing
to 1.0 division at 150 MHz (100 MHz in
AUTO LEVEL).
1.4 division from dc to 10 MHz; increasing
to 2.2 divisions at 100 MHz.
0.5 division or less will not trigger.
0.35 division from de to 50 kHz; attenuates
signals above upper -3 dB cutoff frequency
of 70 kHz.
0.35 division from 100 kHz to 10 MHz,
increasing to 1.0 division at 150 MHz
(100 MHz In AUTO LEVEL); attenuates
signals below the lower -3 dB cutoff
frequency of 50 kHz.
signals below the lower -3 dB cutoff
frequency of 20 Hz.
AND B TRIGGER
20 dB or more at 100 MHz?
30 dB or more at 100 MHz.?
6-8
ben