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ASI128MC Pro Manual
9
5.2 DDR Buffer
The ASI128MC Pro camera includes a 256MB DDR3 memory buffer to help improve data
transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused
by the slow transfer speeds when the camera is used with a USB 2.0 port.
DDR memory buffer is the main difference between ASI “Cool” and “Pro” cameras.
5.3 Power Consumption
ASI128MC Pro has Full-Frame sensor, the max power consumption is around 500ma@5V
which is nearly the maximum power supply of USB2.0. We recommend customer connect ASI128
through USB3.0 which can provide 1A@5V power.
You need to connect the external 12v power supply if you connect the camera to USB 2.0
host which can only provide 500ma current.
Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center
pole positive). Also suitable: DC battery with 9-15V.
Here is a test result of the cooler power consumption of ASI128 camera. It only needs 0.5A to
cool the camera to 30 degree below ambient.
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