U511 User’s Manual Parameters
Version 1.1 Aerotech, Inc. 4-11
4.2.15. “A/D channel n center” Position Parameters
These parameters specify the center position of the A/D inputs used for joystick mode.
This allows the joystick pot to be digitally centered or calibrated. The parameter value is
the number of A/D counts assigned to the center position. The default value is zero, which
is internally interpreted as 128 A/D counts (2.5 V) for backward compatibility.
The parameter definitions are listed in Table 4-5. Parameters 091 and 093 are currently
not used because the joystick is connected to channel numbers 3 and 4. A/D channel no. 1
is normally the MFO input. A/D channel 2 is normally the user analog input.
Table 4-5. Joystick Center Position Parameters
Parameter # A/D Channel Default Value
091 A/D Channel No. 1 0
093 A/D Channel No. 2 0
095 A/D Channel No. 3 (joystick vertical axis) 0
097 A/D Channel No. 4 (joystick horizontal axis) 0
The A/D converter is 8 bits scaled so that 0 V gives an output of 0 and +5 V gives
an output of 255. An A/D output of 128 corresponds to an input of +2.5 V.
4.2.16. “Enable speaker”
Parameter 647 turns the audible feedback system on or off. With the parameter set to
“yes” the U511 will make an audible beep every time a key on the front panel or keyboard
is pressed. With this parameter set to “no,” no beeps will be heard. However, even with
the speaker disabled, the U511 will beep once upon power up. The default condition is
“no.”
091
093
095
097
E
647
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