ALIGNMENT PROCEDURE
32
SH4 STANDARD MUTING
Alignment Procedure
SH4-X-XXXX-SM-8 models
The ALIGNMENT function can be activated at power up keeping the RESET/RESTART sig-
nal (pin 1) LOW for at least 0.5 seconds, as shown in the following timing diagram.
When a good state of alignment is reached a power OFF and a power ON operation
carry back the ESPE in normal operation.
In Alignment Mode ESPE is always in Safe State and the OSSDs are kept OFF.
The state of alignment is estimated from RX unit by reading the received signal level of
each beam. First and last beam received level gets some more weight.
SH4-X-XXXX-SM-8-5 models
The ALIGNMENT function can be activated at power up keeping the RESET/RESTART sig-
nal (pin 1) HIGH for at least 0.5 seconds, as shown in the following timing diagram.
When a good state of alignment is reached a power OFF and a power ON operation
carry back the ESPE in normal operation.
In Alignment Mode ESPE is always in Safe State and the OSSDs are kept OFF.
The state of alignment is estimated from RX unit by reading the received signal level of
each beam. First and last beam received level gets some more weight.
LIGHT CURTAIN POWER SUPPLY
RESET/RESTART SIGNAL
ALIGNMENT STATE
0.5 s
ON
OFF
LOW
HIGH
ON
OFF
LIGHT CURTAIN POWER SUPPLY
ALIGN SIGNAL
ALIGNMENT STATE
ON
OFF
HIGH
LOW
ON
OFF
0.5 s
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