USB-DT
Direct-attach Light Source
Installation and Operation Instructions
Description
The USB-DT is a direct-attach UV light source providing broadband output from 200–2000 nm for
Ocean Optics’ USB2000, USB4000, USB2000+, HR2000, HR4000 or HR2000+ Spectrometer. The
USB-DT connects to an Ocean Optics spectrometer in the following ways:
Stacked underneath the USB2000, USB4000 or USB2000+ Spectrometer and connected with
the DB15 accessory cable (HR4-CBL-DB15) or the USB2000/DT Adapter (USB-ADP-DT2)
Connected to an HR2000, HR4000 or HR2000+ Spectrometer with the DB15 accessory cable
(HR4-CBL-DB15) or the Breakout Box (HR4-BREAKOUT)
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USB-DT Installation and Operation Instructions
Parts Included
The USB-DT ships with the following items:
USB-DT Light Source
5VDC power supply
DB15 accessory cable (HR4-CBL-DB15)
Additional Accessories Available
The following are additional accessories available from Ocean Optics that you may need, depending
on your system set-up:
Fiber optic cable for connection to the spectrometer
Breakout Box (HR4-BREAKOUT)
USB Series Spectrometer DT adapter (USB-ADP-DT2)
Replacement bulb (USB-DT-B)
Using the USB-DT
The following sections provide instructions on setting up and using the USB-DT.
Connecting the USB-DT
The set-up procedure differs, depending on whether you are connecting the USB-DT to a USB Series
or an HR Series Spectrometer.
Connecting to a USB Series Spectrometer
► Procedure
Follow the steps below to connect the USB-DT to a USB Series Spectrometer:
1. Remove the USB-DT from the product packaging.
2. Connect the spectrometer’s 10-pin accessory connector to the USB-DT Adapter
OR
3. Connect the spectrometer to the DB15 cable assembly and connect the other end to the
USB-DT’s 15-pin connector.
You have now connected the USB-DT for operation with the USB Series Spectrometer.
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USB-DT Installation and Operation Instructions
Connecting to an HR Series Spectrometer
► Procedure
Follow the steps below to connect the USB-DT to an HR Series Spectrometer:
1. Remove the USB-DT from the product packaging.
2. Connect the spectrometer’s 30-pin accessory connector to the Breakout Box using the
Breakout Box Accessory cable.
OR
3. Connect the spectrometer to the DB15 cable assembly and the other end to the USB-DT’s
15-pin connector.
You have now connected the USB-DT for operation with the HR Series Spectrometer.
USB-DT Specifications
Specification Value
Dimensions (mm) 88.9 x 94.6 x 39.7
Weight 260 g
Power consumption 1.5 A @ 5 VDC
Wavelength range (source) 200-2000 nm
Path length 1 cm
Cuvette shape Square
Light source Deuterium tungsten
Bulb life (hours) 800 (deuterium); 2,000 (tungsten)
Time to stabilized output 0.5% peak-to-peak (after warm-up)
Spectrometers USB2000,USB4000, USB2000+, HR2000, HR4000, HR2000+
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USB-DT Installation and Operation Instructions
USB-DT Spectral Output
USB-DT Pinout Information
The following section contains information on the 10-pin output connector on the USB-DT.
10 8 6 4 2
9 7 5 3 1
Pinout Diagram of the 10-Pin Output Connector on the USB-DT
Pinouts
Pin Function
1 Unused
2 Unused
3 Unused
4 Lamp Enable
5 Continuous Strobe
6 Ground
7 External Trigger In
8 Single Strobe
9 I2C SCL
10 I2C SDA
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Pinouts of the DB15 Output Connector on the USB-DT
Pin Function
1 Single Strobe
2 Continuous Strobe
3 RS232 Rx
4 External Trigger In
5 Unused
6 Unused
7 Unused
8 External Trigger In
9 Unused
10 Ground
11 I2C SDA
12 I2C SCL
13 Lamp Enable
14 Unused
15 Unused
USB-DT Installation and Operation Instructions
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USB-DT Installation and Operation Instructions
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