O (4FH) Set Write Density to 210bpi on tracks 1 and 3
o (6FH) Set Write Density to 75bpi on tracks 1 and 3
N (4EH) Set Write Density to 210bpi on track 2
n (6EH) Set Write Density to 75bpi on track 2
ACTION The unit performs the following sequence: Set density for the specified
track(s). Transmit Command acknowledge (“^” 5EH). These commands were retained to
preserve compatibility with the older AMC 712 command set. If track 1 and 3 require
different density settings, use the more general Set Write Density (“;” 3BH) command.
Note (1) On Power-up/Reset, Tracks 1 and 3 default to 210bpi and Track 2 to 75bpi.
(2) These commands must be sent prior to any Load Data commands. Errors may occur
otherwise.
Write Current Commands: Use these commands to set and review the write current
used to encode data on to cards. (VC units only)
[ (5BH) Set Default Write Current
FORMAT 4-byte command – Command character ([), is followed by three ASCII
number characters (0 thru 9) representing the write current used for encoding.
ACTION The unit performs the following sequence: Change the write current setting
in EEPROM and RAM to the specified value. Valid values are 000 to 255 only. Any other
values outside this range gets a “*” reply from the unit. If not a VC unit, then a “~” reply is
sent from the unit. Transmit Command acknowledge (“^” 5EH). This command may be
sent anytime prior to an “Arm to Write” command.
Notes (1) In USI0 there is a 5-second inter-character timeout
On Power-up/Reset, this value is used for encoding cards.
The previous default current value is lost.
Recommended values:
Typical low coercivity (~300 Oersted) setting = 036
Typical high coercivity (4140 Oersted) setting = 255
] (5DH) Review Default Write Current
ACTION The unit returns a 3 ASCII character response representing the default write
current setting stored in EEPROM, MSD first. If not a VC unit, then a “~” reply is sent
from the unit.
Note The value returned is not necessarily the value used to presently encode cards
with; i.e. the temporary value could be different.
To Next Page
Loading...
