19
CASSETTE INTERFACE (CONT.)
----------------------------------------------------------------------------
TO CHECK TAPES;
The CHECK function of the Cassette Interface enables verification of
the data on a tape without actually transferring the data into the DMX's
memory. A tape should always be checked after recording.
1) Connect the Cassette Recorder to the Cassette Interface Jacks
on the rear panel of the DMX as described in "CASSETTE
INTERFACE CONNECTIONS", above.
2) Enable the Cassette Interface by throwing the switch on the
rear panel.
3) Press the PLAY switch on the tape recorder. You will now be
able to monitor the tape through the MIXED OUTPUTS of the DMX.
4) As soon as the "leader" tone is heard, press the CASSETTE
CHECK switch on the DMX (it shares a button with the SONG
switch ). At least three seconds of the "leader" tone must
come between pressing CHECK and the rough sound of the
memory information. The display will read "CHECKING DATA"
from the time the switch is pressed until the data check has
been completed. The display will then read "DATA
COMPLETED".
5) If an error is detected, the display will read "ERROR IN
DATA".
** NOTES **
Once the leader tone has started the cassette
interface must complete its cycle.
Some cassette recorders invert the phase of the
signal in the process of recording and playing
back. If your cassette recorder NEVER checks data
properly, the inverted phase may be the problem.
The software version 2.10 (released in June 1982)
enables inverted data to be read properly by the DMX
Cassette Interface. To set the DMX to read
inverted data, hold the "0" button while pressing
CHECK. The first digit of the display will show a
"!", indicating that the DMX is expecting inverted
data.