Tektronix 2247A

Performance Characteristics
Table 6-1 (cont)
Electrical Characteristics
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CS ®
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PERFORMANCE REQUIREMENTS
AND B TRIGGER
The sweep will free run If trigger source
frequency Is less than 10 Hz.a
In AUTO LEVEL, if the trigger source
frequency is £25 Hz, the range of the
Trigger LEVEL control may be reduced.
+ 20 divisions referred to the appropriate
vertical Input.
This range is sufficient to allow triggering
at any point on a displayed waveform for all
modes except ADD. In ADD, the com-
bined range of the two position controls
exceeds the trigger level range, making it
possible (though unlikely) to pull a signal on
screen for display but fail to trigger on it
due to Insufficient trigger level range.
Does not exceed the peak-to-peak amplitude
of the trigger signal that was present when
the AUTO LEVEL limits were set.2
+(0.3% of reading + 10% of one vertical
division) 2
AND CURSOR FUNCTIONS
+ (0.5% of reading + 2% of one vertical
division + 250 wtV).
CHARACTERISTICS
A
Free Run Enable
Frequency
AUTO and
AUTO LEVEL
LEVEL Control Range
AUTO, NORM, and
SGL SEQ
AUTO LEVEL
TRIGGER LEVEL
READOUT Accuracy
VOLTMETER
VOLTMETER FUNCTIONS
DC VOLTS
Accuracy
Normal Mode
Rejection Ratio
Greater than 50 dB at 50 or 60 Hz.
4 Performance Requirement not checked in manual.
2247A Operators
REV SEP 1989 6-9