Analog And Digital Inputs And Outputs - NeuroNexus SmartBox Instruction Manual

Analog and Digital Inputs and Outputs

The SmartBox features a total of 16 digital inputs, 16 digital outputs, 8
™
ADC inputs, and 8 DAC outputs. While two channels for each of these
are located for easy interfacing on the box itself, the remaining 40 inputs
and outputs are wired to a DB-50 female socket on the back panel (see
below).
The 16-bit, 0-5 V ADC inputs may be used to sync external analog signals,
e.g. sync auditory signal with acquired neural signal. The 0-5 V digital in-
puts may be used to sync external TTL signals, such as light pulses for op-
togenetics or lever press in behavioral experiments, with acquired data.
The 16-bit, -3.3 V - +3.3 V DAC outputs allow the user to reconstruct
acquired digital signals back to analog for monitoring on an oscilloscope
or acquisition in LabVIEW. Channels routed to these DAC outputs can be
selected in software. The 0-5 V digital outputs can be used to drive exter-
nal devices (NOTE: this feature is not currently supported by software).
8 digital output lines serve as low-latency threshold comparators that
operate on signals routed to the DAC outputs.
To interface with additional I/Os via the DB-50 connector, users are rec-
ommended to purchase a DB-50 breakout board such as the BRKDD50M
offered by Winford Engineering
brkdd50.php).
(http://www.winfordeng.com/products/
NeuroNexus Technologies, Inc. ©2014
Telephone: +1.734.913.8858 | Fax: +1.734.786.0069 |
D B 5 0 PI N S IG N A L
1
TTLIN2
2 TTLIN3
3 TTLIN4
4 TTLIN5
5
TTLIN6
6 TTLIN7
7 TTLIN8
8 TTLIN9
9
TTLIN10
10 TTLIN11
11 TTLIN12
12 TTLIN13
13
TTLIN14
14 TTLIN15
15 ADC3
16 ADC4
17
ADC5
18 ADC6
19 ADC7
20 ADC8
21
TTLOUT2
22 TTLOUT3
23 TTLOUT4
24 TTLOUT5
25 TTLOUT6
p.10
| 655 Fairfield Court, Suite 100, Ann Arbor, Michigan USA
support@neuronexus.com
CONNECTIONS
D B 5 0 P IN S IG N A L
26
TTLOUT7
27 TTLOUT8
28 TTLOUT9
29 TTLOUT10
30
TTLOUT11
31 TTLOUT12
32 TTLOUT13
33 TTLOUT14
34
TTLOUT15
35 DAC3
36 DAC4
37 DAC5
38
DAC6
39 DAC7
40 DAC8
41 ADC Clock Signal
42 GND
43 +3.3 V
44 -3.3 V DAC
45 +3.5 V
46 +5 V
47 GND
48 GND
49 GND
50 GND