Gated C/T Measurement Menu - Tektronix 2247A Operator's Manual

Operators Familiarization
FREQ-Measures the frequency of the selected source channel.
PERIOD-Measures the period of the selected source channel.
WIDTH-Measures the width of the selected source channel.
TOT ALIZE-Displays a running count of trigger edges from the
selected source channel.
NOTE
The totalize count Is reset to zero whenever a front panel
switch/button is moved/pushed.
The following error messages may be displayed for the above
measurements:
Message
"NOB TRIG"
"<0.01Hz"
">100s"
">999999999"
Reason(s)
No start trig was detected after timeout.
No stop trig was detected after timeout.
Frequency of measured signal less then
0.01 Hertz (timeout disabled).
Period or width of measured signal greater
then 100 seconds (timeout disabled).
Totallze count greater than 999999999.
FREQ RA TIO-Measures the frequencies of the two sourcb chann
displays their ratio. Possible error messages:
Message
"NO CHx TRIG"
"NO CHy TRIG"
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Reason (s)
No start trig was detected after timeout
while trying to measure chx frequency . '
No stop trig was detected after timeout ,
while trying to measure chx frequency .
No start trig was detected after timeout ,
while trying to measure chy frequency .
No stop trig was detected after timeout ,
while trying to measure chy frequency .
"CHx<0.01Hz"
"CHy<0.01Hz"
">99999999"
Operators Familiarization
Frequency of chx signal less then 0.01
Hertz (timeout disabled).
Frequency of chy signal less then 0.01
Hertz (timeout disabled).
Frequency ratio greater th~n 99999999.
(TO GATED MEASMT MENU)-Causes (CTR/TIMER PG 2) menu to
appear.
Gated CIT- Measurement Menu Page 2
When the (CTR/TIMER PG 2) menu Is up, sel~cting a measurement will
start the measurement, but leave the menu up. The selected measurement
Item Is underlined.
GA TED FREQ-Measures the frequency of that portion of the
selected source channel that appears inside the Intensified zone.
GATED PERIOD-Me. a sures the period of that portion of the selected
sour.ca channel that appears inside the Intensified zone.
GATED WIDTH-Measures the width of that portion of the selected
source channel that appears inside the intensified zope.
GA TED EVENTS-Displays an averaged count of the number of trig-
ger edges from the source channel that occur inside the Intensified
zone.
These error messages are possible for gated measurements, In addition to
those shown above for the nongated versions:
Message
" NO A TRIG"
">999999999"
Reason(s)
No A sweep was detected after timeout,
in gated measurements.
Gated event count greater than 999999999.
(TO CIT CONTROL MENU)-Causes (C/T CONTROL) menu to
appear.
2247 A Operators
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