Datavideo HDR-90 Instruction Manual page 12

*The 3G-SDI is known as the 3 Gb/s interface, but the actual bit rates are 2.97 Gb / s and
2.97 / 1.001 Gb / s. 3G-SDI supports several different mapping levels, as described in the
SMPTE ST425-1 standard. These levels are called A, B-DL, and B-DS.
**The 12G-SDI is an SDI standard developed to support higher resolution, frame rate, and
color fidelity. It provides four times the bandwidth of HD, carrying 12Gbps, making it ideal
for the 4K 60p format.
Time Code Signal IN /OUT
The user can select the time code source as internal or
external. Set time code source to external when supplying an
external Time Code source to this input port.
XLR Analog Audio IN
XLR IN Port for balanced audio connection.
XLR Analog Audio OUT
XLR OUT Port for audio channel 1/2 outputs and the volume
is controlled by the volume knob on the front panel.
Ethernet Port
For remote control of the device.
GPI Control
The GPI socket can be used for simple external control. The
recorder can accept pulse or level trigger inputs, which can
trigger record or playback and pause commands.
RS-232/422 Remote Control
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