Revision 2.00 / LB-0889
– CerePlex Exilis: Instructions for Use
© 2019 Blackrock Microsystems, LLC
16
Testing and Calibrating the Wireless System
1. Place the CerePlex Exilis headstage and DNSS in the experimental area.
2. Turn on the CerePlex Exilis headstage using the magnetic wand as shown in
above.
3. Turn on the CerePlex Exilis receiver by pressing the round power switch shown in
4. The indicator LED on the digital hub or CerePlex Direct change from ORANGE to either
BLUE or GREEN, depending on the model, to indicate successful communication
between the CerePlex Exilis receiver and the data acquisition system.
5. If the receiver is properly tuned, the reception indicator LEDs on the CerePlex Exilis
receiver should illuminate. Adjust the frequency tuning dial to maximize the number of
antenna input channels with illuminated reception indicator LEDs.
6. If tuning the receiver frequency does not cause the reception indicator LEDs to
illuminate, it could be due to range issues. Ensure the antennas are pointed in the right
direction and oriented correctly (see
and
) and that the CerePlex
Exilis is within 1 meter of the antenna(s) you are trying to tune.
Wireless Data Transfer
Maximum Sampling Frequency
The true sampling rate of the CerePlex Exilis is approximately 24.5 kS/s. For this reason,
recordings using the CerePlex Exilis system cannot record voltages at 30 kS/s even
when the sampling rate is chosen to be 30 kS/s through Central’s Hardware
Configuration tool. However, recordings from the CerePlex Exilis collected through
Central will still have data sampled at 30 kS/s. This is accomplished through an up-
sampled buffering process.
Up-sampled Buffering Process
The CerePlex Exilis transmits recordings from up to 96 channels in a single
frame. The receiver holds this frame’s information in an output buffer that is
sampled from the NSP at 30 kS/s, and the wireless receiver will clear its output
Figure 14
–
The CerePlex Exilis on a DNSS.
