GULBRANSEN KS1 Owner'S Manual Download Page 4

 

SET-UP FUNCTIONS

 

 

Key adjust: 

 
To enter: 

Press and hold the SETUP button for one second.  

Indication: 

SETUP light flashes rapidly. 

To exit: 

Press any button. 

 
Inside your piano, there is a sensor strip beneath the piano keys. This sensor strip detects the position of 
each key and keeps track of this over time. The KS1 control unit makes decisions based on this 
information which tell it when to play notes, when to release them, and so on. There is a keyboard 
calibration procedure which must be performed in order for the sensor strip to work properly. It's 
necessary so the control unit can know the rest position and full travel of each key. With this information, 
an accurate judgment of the current position of the key can be made while the piano is being played.  
 
For the technically-minded, here's a brief explanation of how the sensor strip actually works. The sensor 
strip is a series of optical sensors, one for each key. Each optical sensor 
has two small plastic "towers." One tower transmits a beam of infrared 
light to the other tower which detects infrared light. There is a small 
spring-loaded actuator finger which serves as a shutter by blocking the 
light beam. It gradually reduces the amount of light detected as it is 
depressed. The sensor strip is mounted beneath the keyboard, 
positioned so that an actuator touches the bottom of each key. The 
actuator's position is maintained by a very light spring and is 
undetectable by the player. The travel of the key is not restricted by the 
sensor strip and the piano action is completely unaffected. 
 
The adjustment procedure is simple and takes little time. It should have been performed when your piano 
was delivered, and should be performed again if the piano is ever moved or if some notes don't seem to 
work properly. It is a good idea to do an adjustment from time to time and is one of the first things to do if 
notes do not play correctly. 
 
Press the Setup button for one second to begin the keyboard calibration. Make sure you are not holding 
any keys down when you do this. The KS1 will look at the key rest positions when entering this function. 
If you are holding any keys down, they will not work properly.  
 
After holding the SETUP button for one second the SETUP LED will flash rapidly. You can now release 
the button. Play every key on the piano. It does not matter if a key is pressed more than once, but it is 
important that each key be pressed down all the way without unduly compressing the felt that is under the 
front of the key. You can think of this as a good opportunity to practice the chromatic scale. 
 
Press the Setup button to exit adjustment mode.  
 

Summary of Contents for KS1

Page 1: ...KS1 MIDI 9 GULBRANSEN MIDI ADAPTER OWNER S MANUAL MIDI 9 800 757 MIDI www midi9 com ...

Page 2: ...ynthesizer sequencer or computer having a MIDI IN jack If the SS88 sensor strip is not already installed in your piano refer to the installation manual that was shipped with the KS1 The first thing you will want to do is perform a bench test to make sure none of the KS1 components were damaged in shipping It is much easier to resolve any problems if the system is bench tested before installation i...

Page 3: ...pedals This button allows you to easily turn off your piano s MIDI output Set MIDI Channel By default the KS1 transmits on MIDI Channel 1 but you can change this to any of the 16 MIDI channels The MIDI channel assignment is permanently stored in non volatile memory even if the KS1 is turned off or the power is disconnected To display the current MIDI channel press and hold the Channel button for o...

Page 4: ...tected as it is depressed The sensor strip is mounted beneath the keyboard positioned so that an actuator touches the bottom of each key The actuator s position is maintained by a very light spring and is undetectable by the player The travel of the key is not restricted by the sensor strip and the piano action is completely unaffected The adjustment procedure is simple and takes little time It sh...

Page 5: ...t counterclockwise Go slowly If you play lots of different notes while twisting the knob like a maniac there s no telling what the result will be The software uses the knob s position to alter the settings of the last note you played The only way to use this function predictably is to be careful to only move the knob AFTER you ve played the note you want to adjust Clear EEPROM The KS1 stores its s...

Page 6: ... module s MIDI IN Wrong MIDI Channel or Mode Verify external module is in correct MIDI mode and is listening to the same channel the KS1 is transmitting To get started set your external module s MIDI mode to OMNI or MULTI It will listen to all MIDI channels Misbehaving MIDI IN device Try using a different sound module Some notes do not play Improper installation Verify installation parameters and ...

Page 7: ... 20 MHz 80C186 Processor 1 MIPS Custom VLSI Synthesis Engine 105 MIPS 64 K Bytes RAM 256 K Bytes ROM External Dimensions 125 mm 5 1 W x 216 mm 8 8 D x 30 mm 1 2 H Weight 450g 1 lb Approx KEYBOARD SENSOR STRIP 88 Continuously Variable Opto Electronic Note Sensors Velocity Sensitive External Dimensions 122 cm 48 W x 76 mm 3 D x 51 mm 2 H Approx Weight 7 kg 3 2 lb Approx Specifications subject to cha...

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