Measurement Computing CB-7080 - Manual (Page 34)

CB-7080 & CB-7080D Counter/Timer User's Guide $AA1L(data)
2-16
$AA1L(data)
Description : Set the low trigger level of non-isolated input. Refer to " Programmable threshold voltage
setting " for more information.
Syntax : $AA1L(data)[chk](cr)
$ A delimiter character
AA 2-character HEX module address, from 00 to FF
(data) 2-character decimal value for low trigger level. The unit is 0.1V and the
range can be from 0.0 to 5.0V
[chk] 2-character checksum. If checksum is disabled, no [chk].
(cr) 0x0D
Response :
Valid response !AA[chk](cr)
Invalid response ?AA[chk](cr)
no response Syntax error, communication error or address error
! A delimiter character indicating a valid response
? A delimiter character indicating an invalid response
AA 2-character HEX module address
[chk] 2-character checksum. If checksum is disabled, no [chk].
(cr) 0x0D
Examples :
Low trigger level=0.8 volt:
command: $011L08(cr)
response: !01(cr)
Low trigger level=1.0 volt:
command: $021L10(cr)
response: !02(cr)
Note:
The default value for the low trigger level is 0.8V.