TOT A-B MAN
This mode enables you to calculate the
difference between trigger events on Channel
A and Channel B. Auxiliary parameters are A
and B. Start/Stop is manually controlled by
toggling the key HOLD/RUN, and the
counting registers are reset by pressing
RESTART.
Applications
The TOT A-B MAN makes it possible, for
instance, to make differential flow measure-
ments in control systems.
Example: the number of cars in a parking lot
equals the number of cars passing the entrance
(A) gate, minus the ones passing the exit (B)
gate.
TOT A/B MAN
This mode enables you to calculate the ratio
of trigger events on Channel A and Channel
B. Auxiliary parameters are A and B.
Start/Stop is manually controlled by toggling
the key HOLD/RUN, and the counting regis-
ters are reset by pressing RESTART
Totalize & Arming
By using Arming together with Totalize you
can open and close the gate with an external
signal applied to one of the channels A, B or
E. In this way you can realize a host of func-
tions like TOT A START/STOP by B, TOT
A-B Gated by E and TOT B Timed by A,
simply by selecting channel, slope and delay
time for Start/Stop.
Unlike the manual Totalize functions, the
armed variants resemble the other measure-
ment functions inasmuch as they allow block
and pacing control. Consequently all the Sta-
tistics functions are available. A new result is
displayed after each stop condition.
The comprehensive Arming features can be
found under
SETTINGS Arm.
In order to set up the Totalize functions
above, do the following:
—Select Totalize from the MEAS FUNC
menu and then A.
— Connect the signal to be measured to
Input A.
— Set the trigger level for Input A
manually to a suitable value.
—
Connect the control signal to Input B.
—
Set the trigger level for Input B
manually to a suitable value.
— Go to the Arming menu (SETTINGS
Arm)
and set the seven parameters:
— Arm on Sample/Block
Decide if each event or each block
of events
(STATISTICS mode) shoul
d be
armed.
— Start Channel
Select
B.
— Start Slope
Select POS (marked by a rising
edge symbol).
— Start Delay
Decide if you need to insert a delay
(10 ns - 2 s) between the control signal
and the actual opening of the gate.
USER MANUAL ● CNT 9x Series ● Rev.22 February 2020
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