Ocean Optics HR4000CG-UV-NIR - Manual (Page 32)

B: HR4000 Specifications
30-Pin Accessory Connector – Pin Definitions and
Descriptions
The following table contains information regarding the function of each pin in the HR4000’s 30-Pin
Accessory Connector:
Pin
#
Function Input/Output Description
1 RS232 Rx Input RS232 receive signal – Communicates with a PC over DB9 Pin 3
2 RS232 Tx Output RS232 transmit signal – Communicates with a PC over DB9 Pin 2
3 GPIO (2) Input/Output
General purpose software-programmable, digital input/output
(channel number)
4 V5_SW Output Regulated 5 Volt power pin – Supplies 50 mA (maximum)
5 Ground Input/Output Ground
6 I 2 C SCL Input/Output I 2 C clock signal for communication to other I 2 C peripherals
7 GPIO (0) Input/Output
General purpose software-programmable, digital input/output
(channel number)
8 I 2 C SDA Input/Output I 2 C data signal for communication to other I 2 C peripherals
9 GPIO (1) Input/Output
General purpose software-programmable, digital input/output
(channel number)
10
Ext.
Trigger In
Input
TTL input trigger signal – See External Triggering Options document
for info.
11 GPIO (3) Input/Output
General purpose software-programmable, digital input/output
(channel number)
12
V
CC
, V
USB
,
or 5V
IN
Input or
Output
Input power pin for HR4000 – When operating via USB, this pin can
power other peripherals – Ensure that peripherals comply with USB
specifications
13
SPI Data
Out
Output
SPI Master Out Slave In (MOSI) signal for communication to other
SPI peripherals
14
V
CC
, V
USB
,
or 5V
IN
Input or
Output
Input power pin for HR4000 – When operating via USB, this pin can
power other peripherals – Ensure that peripherals comply with USB
specifications
15
SPI Data
In
Input
SPI Master In Slave Out (MISO) signal for communication to other
SPI peripherals
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