Grove Audio GMS-742a MIDI Preliminary Operation Manual Download Page 5

Copyright 2022 – Grove Audio LLC 

All rights reserved 

 

approximately one second indicating successful programming of the option. Rotate the Mode selector 
switch back to the operation mode that was being used. 

PROGRAMMABLE CONTROLS GRID 

POS 

FUNCTION 

GROUP 1 

Gate1 

POS 

FUNCTION 

GROUP 2 

Gate2 

1/96 24ppqn rate (not implemented) 

Pitchbend range +- ½ semitone 

1/48 clock div 

Pitchbend range +- 1 semitone 

1/48 dotted clock div (not implemented) 

Pitchbend range +- 2 semitone (default) 

1/32 clock div 

Zero volts at C4 

1/16 clock div 

Zero volts at C3 

1/16 dotted clock div  

Zero volts at C2 

1/8 clock div (default) 

Zero volts at C1 (default 

– Q104 mode) 

1/8 dotted clock div 

Disable Pitchbend for mode 7&8 
(default) 

1/4

 

clock div 

Enable Pitchbend for mode 7&8 

10 

1/4 dotted clock div 

10 

Disable continuous MIDI clock (default) 

11 

1/2 clock div 

11 

Enable continuous MIDI clock  

12 

1/2 dotted clock div 

12 

Disable RUN/STOP pulse mode 
(default) 

13 

1/1 clock div 

13 

Enable RUN/STOP pulse mode  

14 

Not used 

14 

Auxiliary gate outputs disabled 
(default) 

15 

Disable MIDI clock note control 

15 

Auxiliary gate outputs enabled 

16 

Enable MIDI clock note control 

16 

Reset system defaults 

POS 

FUNCTION 

GROUP 3 

Trig1 

POS 

FUNCTION 

GROUP 4 

Trig2 

14 

Save Zero and Span calibration to default 

 

Coming soon 

16 

Return Zero and Span to factory settings 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for GMS-742a MIDI

Page 1: ...Copyright 2022 Grove Audio LLC All rights reserved 1 GMS 742a MIDI to CV CONVERTER PRELIMINARY OPERATION MANUAL APRIL 17 2022 Grove Audio LLC Copyright 2022 All Rights Reserved...

Page 2: ...hannel will produce the voltage equivalant of the MIDI velocity value one gate channel will produce a gate signal for the duration of the MIDI note on to note off time and one gate channel will produc...

Page 3: ...Note CV Gate Ch 2 C2 C5 Note CV Gate Common MIDI Channel 10 2 Ch Independent Legato On Split Keyboard Ch 1 C0 B1 Note CV Gate Ch 2 C2 C5 Note CV Gate Common MIDI Channel 15 Channel Calibration Mode 1...

Page 4: ...roximately two seconds until the Gate 1 LED starts to flash This indicates that the module is in the programming mode By briefly pressing the toggle switch to the right and releasing it the program gr...

Page 5: ...ck div 6 Zero volts at C2 7 1 8 clock div default 7 Zero volts at C1 default Q104 mode 8 1 8 dotted clock div 8 Disable Pitchbend for mode 7 8 default 9 1 4 clock div 9 Enable Pitchbend for mode 7 8 1...

Page 6: ...le switch to be high from the time the RUN realtime message or MIDI note command is received until the STOP realtime message or MIDI note command is received The output can be set to be either a level...

Page 7: ...acy meter will work but a 5 digit DVM is preferred The current calibration points are between C3 and C5 The default values for these calibration points for the 5 Volt are 1 0000 Volts Calibration valu...

Page 8: ...h external controller An external keyboard controller can be routed to the converter module to perform calibration by using MIDIOX Open the OPTIONS MIDI Devices tab Click the name of the converter mod...

Page 9: ...ng calibration The module can store and recall up to 16 sets of calibration tables including zero and span calibration values for the 5 V 5V range The set of tables stored in the default location will...

Page 10: ...Connect a USB type A cable from the host computer and plug the miniB end of the cable into the USB connector on the module There may be some preliminary communication and installation of drivers Even...

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