B-320-2-E
29
9. INSPECTION
9.1 Register Inspection
●
Test pin functions
(Show waveshapes while the fluid flows)
NOTE: The register housing serves as 0V (common).
PIN NAME
FUNCTION
WAVEFORM
SIG
An amorphous sensor output waveform appears.
10μs
200mV
200mV
IN
Accepts a simulated pulse train from the pulse
checker (OVAL Model PC2201, for example).
Used for making a loop check or other servicing.
Input mode is Model PC2201's PG30 mode. Also
accepts pulses with levels "0": 1V max. and "1": 3 to
12V, or open collector.
PLS
A rectangular waveform after waveshaping the SIG
pulse waveform. Output timing remains the same as
that of SIG.
2 to 2.5ms
3V
Pulse frequency ≤ 200Hz
OUT
Produces a factored pulse output with the same
timing as that of the indicated count.
1 to 1.5ms
3V
LCD DISPLAY
SIG PIN
IN PIN
PLS PIN
OUT PIN
Fig. 9.1 Test Pins on the Front of Register’s Internal Assembly
