TONE 1000 Hz
1000 Hz sine wave at approximately ±70 uV on all channels (actual frequency is ~763 Hz).
TONE REF
100 Hz sine wave at approximately ±700 uV on Reference channel only. All other channels
output 0. Because the reference is subtracted from all channels, the sine wave should be
visible on all channels.
Inhibitory/Excitatory Mode
An inhibitory/excitatory mode can be used in conjunction with all spike modes (NORMAL,
HASH, TETRODE, and SYNC 100 Hz). When enabled, the base neurological waveforms (LFP)
remain the same but some spike shapes are inhibited (
fi
re less often) while others are excited
(
fi
re more often).
The Inhibitory/Excitatory mode can be activated by holding down the Sync button or it can be
controlled programmatically by sending a TTL high to the Sync BNC connector. When using the
Sync input, the mode change can also be timestamped in Synapse, which is helpful when
testing event-related spike changes and verifying that histogram plots are working correctly.
Reference lines are connected to Ground (0 V) for all modes except TONE REF.
Note
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