TrueTime 151-600, Руководство пользователя

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X X L L D D C C M M A A N N . . d d o o c c 1 1 - - 1 1 2 2 R R E E V V E E
1-62 SERIAL DATA FORMAT
The default Serial format, as shipped, is:
Data Rate: 9600 bits/second
Word Length: 7 bits
Parity: Even
Stop Bits: 1
The format cannot be changed via the Serial Port. Factory or Keypad (see “KEYPAD FUNCTION 04 -
SERIAL PORT SETUP”) configured formats available are:
Baud Rates: 300, 600, 1200, 2400, 4800, 9600,19200
Word Lengths: 7 or 8 bits
Parity: Even, odd or none
Stop Bits: 1 or 2
1-63 EXCLUSIVE USE
To facilitate remote operation, the unit has the ability to grant "exclusive use" (see Serial Function F15)
to one of the control ports (currently the IEEE 488 port or the Serial Port). The front panel keypad
cannot be granted exclusive use. At most, one port at a time can have exclusive use until sent a
command to release it or until the unit loses power. At power-on, or when exclusive use is off, any port
or the front panel has free access. When a port has exclusive use the front panel keypad and all other
ports cannot change any of the setup parameters. They can, however, request the current parameters.
Example:
If the Serial Port has exclusive use and "FUNC/ENTR" "0" "1" is pressed on the keypad, the
current time zone will be displayed. If "FUNC/ENTER" is pressed, attempting to set the time
zone, an error message displays and the time zone displays again. To exit the function, use the
"TIME", "STATUS", or "POSITION" button.
Example:
If the IEEE port has exclusive use and "F02<cr>" is entered on the Serial Port, the port will
respond with the current setting of the 12/24 hour mode. If "F02 12<cr> is entered, it is an
attempt to change the 12/24 hour mode and the message:
ERROR 04 EXCLUSIVE USE<cr><lf>
will be returned, indicating that the Serial Port is not allowed to change this item.