TDT RZ2, Manual

Page: 359 / 736

System 3 7-45
MS4/MS16 Stimulus Isolator
Summary: Simultaneous Stimulation on Multiple Channels
The example below shows a more complete picture, with the MS16_Control macro
used to set or
turn on
multiple channels using the ChanMask hop, “Setting Multiple
Channels for Stimulation or Local Reference” on page 7-42, and the Poke used to
write the signal value to the MS4/MS16 memory location for channels one and two
with the RZ5.
Circuit Design Using the Poke Component
Using the MS16_Control macro simplifies circuit design for the MicroStimulator System.
If the macro cannot be used, you can use the RPvdsEx Poke component to control
the stimulus isolator by writing information to memory addresses on the RZ5 or RX7.
Memory Address Reference for Using the Poke Component
The table below summarizes each stimulus isolator control function and its memory
address.
Signal Output to Stimulus Channels
To generate signals on the stimulus isolator, the output waveforms are poked
(written) to memory locations as integer values. See “Converting the Signal to an
Control Value Description
Memory Address
RZ5 RX7
Stimulus Channels Mask for channels between none and 16;
integer value between 0 and 65535
48 7
Signal Output Integer representing current level scaled for
D/A (varies depending on device).
32-47 20-35
Global Reference 0 (off) or 1 (on) 50 9
Reference
Channels
Mask for channels between none and 16;
integer value between 0 and 65535
49 8
Digital Out Mask for channels between none and 16;
integer value between 0 and 65535
51 3