TDT RZ2 Manual page 206

5-8
6. When the configuration is complete, click OK to return to the Set Hardware
Using the RM2 Fiber Optic Port
The RM2 Fiber Optic Port can be used with a Medusa or Loggerhead preamplifier;
however, it is unlikely that a single RM2 device can acquire 16 channels of high
frequency activity. Instead we recommend that the RM2 be used for low channel
count (up to four channels) high sample rate acquisition or for high channel count
low sample rate activity (e.g. 16 channels of slow EEG activity). Using the RM2 as
part of a Medusa/Loggerhead system effectively provides two channels of high quality
A/D inputs and up to 16 channels of signal input running at 25 kHz. The signal
input lines accessed via the analog I/O and fiber optic port are mapped as
described below to allow for simultaneous use of the high quality A/D and the
amplifier input channels.
Analog I/O Input Channel 1
Analog I/O Input Channel
2
Amp Channel 1
Amp Channel 2
Amp Channel 3
Amp Channel 4
Amp Channel 5
Amp Channel 6
Amp Channel 7
For more information about the Medusa, see the "RA16PA/RA4PA Medusa
PreAmps" on page 6-83.
Software Control for the Mobile Processor
In general, the RM processors can use any circuit that has been designed for the
RP2.1. There are a few caveats that relate to the number of digital inputs and
outputs, the positioning of the input channels from the fiber optics on the RM2, and
the maximum signal voltage.
Digital I/O
The RM has only eight digital I/O channels. Circuits that use more than four TTL
outs or four TTL ins will not work with the RM.
RM1/RM2 Mobile Processors
Note: Modifying any of the bits will change the default configuration (by
default, bits 0-3 are inputs and bits 4-7 are outputs).
Parameters dialog box.
RM2 Channel
Channel 1
Channel 2
Channel 17
Channel 18
Channel 19
Channel 20
Channel 21
Channel 22
Channel 23
RM2 Channel
Amp Channel 8 Channel 24
Amp Channel 9 Channel 25
Amp Channel 10 Channel 26
Amp Channel 11 Channel 27
Amp Channel 12 Channel 28
Amp Channel 13 Channel 29
Amp Channel 14 Channel 30
Amp Channel 15 Channel 31
Amp Channel 16 Channel 32
System 3