Factory Commissioning Mode - Boss

GT-X Setup Manual

Section 27 Factory Rest/Commissioning
8. DS A/D/A:Low Check
This test is checking a complex analogue test signal that is
converted to digital, then back to analogue for comparison
using an Oscilloscope. [GAIN LOW] is displayed on the
display's bottom line. Press [EXIT] to continue.
9. DS A/D/A:High Check
This test is checking a square wave analogue test signal that
is converted to digital, then back to analogue for
comparison using an Oscilloscope. [GAIN HIGH] is
displayed on the bottom line. Once again, press [EXIT] to
continue.
10. DS A/D/A:OD Check
This test is checking a square wave analogue test signal that
is converted to digital, then back to analogue for
comparison using an Oscilloscope. This test is checking the
DS A/D D/A converters. [OVERDRIVE] is displayed on
the bottom line. Once again, press [EXIT] to continue.
11. DS A/D/A:CV Check
This test is checking the DS Control Voltage test signal
using an Oscilloscope. [CV Check] is displayed on the
bottom followed by a control voltage number that scans up
and down. Once again, press [EXIT] to continue.
12.EXT OD/DS Check
This test checks a generated DSP signal to the SEND jack
of the loop. Again, this is designed to be done on an O-
scope showing a nice rectangular waveform output. When a
blank plug is inserted into the RETURN jack, the signal
should stop at the SEND Jack, and show up at the OUTPUT
(L) Jack. This verifies the cut-off function of the RETURN
Jack. The display bottom line reads [DSP-> EXT -> OUT].
Once again, press [EXIT] to continue.
13.INPUT A/D Check
This test is checking a square wave analogue test signal that
is input into the INPUT Jack, run through the ADC / DAC
process, then to the OUTPUT Jack for comparison using an
Oscilloscope. First the INPUT Level, then the OUTPUT
Level are slowly adjusted to show output level change on
the scope. [IN---- OUT] is displayed in the bottom line.
Once again press [EXIT] to continue.
14. DSP INTO(67p) Check
Um...The test quickly displays '--- OK! ---' and then moves
on. Um...yeah..right...
© Copyright 2000-2002 Barry S. Pearce et al.
15. Noise (IN->OUT) Check
This test checks the residual noise of the I/O system with
the INPUT and OUTPUT levels at MAX. Using a noise
meter, connect to the OUTPUT Jacks (R, then L with a
blank plug in R), look for noise at –79DbM or better. Once
again, press [EXIT] to continue.
16. Noise (EXT) Check
This test checks the residual noise with the EXT OD/DS
loop system converters engaged. Set the INPUT and
OUTPUT levels at MAX. Using a noise meter, connect to
the OUTPUT Jacks. Connect a cable between the loop
SEND and RETURN Jacks. Look for noise at –79DbM or
better. Once again, press [EXIT] to continue.
17. Noise (DS)
This test checks the residual noise of the DS system with the
INPUT and OUTPUT levels at MAX. Using a noise meter,
connect to the OUTPUT Jacks (R, then L with a blank plug
in R), look for noise at –71DbM or better. Once again, press
[EXIT] to continue.
18. Expression Pedal Calibration!
Crumbs. Probably the one you all wanted to know about
and its here!!! If you are feeling a bit wimpy and don't want
to alter your GT-3 in any way NOW is the time to hit the
'Power Button' super-escape-capsule-key-thing
progress on to the Summary.
OK now the folks with no bottle skimming their way to the
Summary let's get down to the stuff that requires a steady
nerve!
This one is quite simple. Just follow the instructions. Bring
the pedal all the way back and press [WRITE] – you should
get an OK message. Then push it all the way forward press
[WRITE] again. You should get another OK message and
then onto...
19. Factory Load
If you don't want to completely reset your GT-3 then power
it off NOW...else press [WRITE] and its as good as new!!!!
GT-5 Factory Commissioning
Mode
The GT-5 Service Manual calls this the "Test Mode". You
can download the Service Manual from the files section of
the GT-5 Yahoo group.
and
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