TDT RZ2, Manual

Page: 29 / 736

System 3 1-23
RZ5D BioAmp Processor
See the “Digital I/O Circuit Design” section of the
RPvdsEx Manual
for more
information on programming the digital I/O.
By default, all digital I/O are configured as inputs. The data direction for the Digital
I/O is configured using the RZ5D_Control macro in RPvdsEx. Double-click the macro
to access the settings on the Digital I/O tab. The RZ5_Control macro also offers a
Direction Control Mode parameter that enables the macro inputs and allows the user
to control data direction dynamically. For more information on using the RZ5D_Control
macro see the help provided in the macro's properties dialog box. For more
information on addressing and Digital I/O see the
RPvdsEx Manual
.
The RZ digital I/O ports have different voltage outputs and logic thresholds
depending on the type. Below is a table listing the different voltage outputs and
thresholds for both types.
LED Indicators
The RZ5D contains 16 LED indicators for the analog and digital I/O. These
indicators are located directly below the VFD and DSP status LEDs. They display
information relative to the various analog and digital I/O. The following tables list the
possible display options and their associated descriptions.
Digital I/O Description DB25 BNCs Notes
Byte A bits 0 - 7 Yes No byte addressable
Byte B bits 0 - 7 Yes No byte addressable
Byte C bits 0 - 7 Yes Yes* bit addressable
*Note: Byte C Bits 0 - 3 are available via front panel BNCs
Digital I/O Type
Voltage Output Voltage Input
logic high logic low logic high logic low
byte addressable 5 V 0 V
≥
2.5 V 0 - 2.45 V
bit addressable 3.3 V 0 V
≥
1.5 V 0 - 1.4 V