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7.41
Input edge
Display:
INPt EdGE
Range:
RISE
or
FALL
Default Value:
RISE
Displays and sets the pulse input edge on which triggering will occur. If set to
RISE
then the
rising edge of the input pulse will trigger the input. If set to
FALL
then the falling edge of the
input pulse will trigger the input. This function can be useful if one of the edges provides a better
switching input than the other e.g. if there is a long rise time in the pulse input but a sharp fall
time then select
FALL
as this will give a more definite pulse transition.
7.42
Display rate or period
Display:
dISP
Range:
RAtE
or
PERd
Default Value:
RAtE
Period or rate display - This function is only seen when the
FREQ RNGE
function is set to
LoF
.
When using the
LoF
range the user has the option of displaying either the rate of the input or
the period of the input. Select
RAtE
for a rate display in Hz. Select
PErd
for a period display
(display format is determined by the display range function (
dISP RNGE
) and the decimal point
setting).
7.43
Period display range
Display:
dISP RNGE
Range:
0
,
0.01
,
0.02
or
0.00.02
Default Value:
0
Period display range - Sets the display range when
PERd
is chosen as the default display at
the
dISP
function (
FREQ RNGE
must also be set to
Lo F
to see this function). Note: on
electromagnetic display types the decimal point position must be mechanically fixed.
The
0
option allows a display in seconds. The
0.01
option allows a display in minutes and seconds
and the
0.00.02
option allows a display in hours.mins.secs (5 and 6 digit displays only). The
0.02
option is available only on 4 digit displays.
The display units and scaling will now depend on the
PERd dCPt
,
PERd INPt
and
PERd
SCLE
settings e.g. the display can be scaled to give a reading which is ten times the real period
if required.
Examples below show how a 2Hz input (0.5 sec or 500mS period) is affected by the
dISP RNGE
,
PERd dCPt
and
PERd SCLE
functions. Examples are shown for a 6 digit display type instru-
ment.
PM4TRMAN-2.7-0
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