ST1952 Operation Manual
30
4. Using
or
to select IMM, MAN, BUS or EXT trigger source and press
to save the
setup.
4.2.2 Measurement Sample
The primary measurement sample action is a measurement. However, the measurement sample action
block could include the following additional actions:
Hold — with hold enabled, the first processed reading becomes the “Seed” reading and operation loops
back within the measurement sample block. After the next reading is processed, it is checked to see if it
is within the selected window (0.01%, 0.1%, 1% and 10%) of the “seed” reading. If the reading is within
the window, operation again loops back within the measurement sample block. This looping continues
until the specified number (2 – 100) consecutive readings are within the winder. If one of the readings is
not within the window, the instrument acquires a new “seed” reading and the hold process continues.
4.2.3 Reading Hold
When a hold reading is acquired as described in “Measurement Sample”, an audible beep is sounded (if
enabled) and the reading is considered a “true measurement”. The reading is held on the display until an
“out of window” reading occurs to restart the hold process. The reading hold feature allows you to
capture and hold a stable reading on the display.
Take steps below to enable and set reading hold function.
1. Press
Shift
+
Trig
to enable reading hold function
2. Press
Shift
→
to enter the menu on the menu level.
3. Use
or
key to select “
B: TRIG MEU
” and press
or
key to move down to
the next level within the TRIG MEU.
4. Use
or
to select “
2: HOLD WIN
” and use
or
key to enter into the
parameter setting HOLD: “Parameter”.
5. Use
or
key to select a window percentage (0.01%, 0.1%, 1%, 10%).
6. Use
or
to select “
2: HOLD CNT
” and use
or
key to enter into the
parameter setting RDGS: “Parameter”
7. Use
keys to setup the parameters and press
to save the setup.
4.2.4 External trigger
BUS trigger: use RS232C or USB bus control to trigger the instrument.
EXT trigger: use START signal pin in HANDLER interface to trigger the instrument.
4.3 Limit Operations
Limit operations set and control the values that determine the HI / IN / LO status of subsequent
measurements. Limits can be applied to all measurement functions except continuity. The limit test is
performed after percent math operations. Unit prefixes are applied before the limit test, for example:
