User manual

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ID TECH EzWriter

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.