Connecting a Sony EVI-D70 to a PC via USB Adapter for Control

Connecting a Sony EVI-D70 to a PC via USB Adapter for Control
Connecting a Sony EVI-D70 to a PC via USB Adapter
for Control Using the EVI-D70 Commander
The Sony EVI series cameras support both the RS-232 and RS-422 interfaces. Your
computer may or may not have an RS-232 port (DB-9 male). If it does, you can buy a
special cable here and terminate the PC end with a DB-9 female connector. Or, you
could terminate the opposite end with an RJ-45 and use a CAT-5 patch cable and a
coupler to extend it. You would then need to have an adapter at the computer end.
If your computer does not have an RS-232 port, you will have to purchase a USB-toserial adapter. In that case, you will be better off using the RS-422 interface as it is
more robust, supports runs up to 1500 meters, and is simpler to interface since the
camera comes with an RS-422 connector.
"RS-422" is the name of a specification. You will find these
adapters at a wide variety of prices. All of them do the same
thing, you don't need anything fancy. Especially do not buy
one that is a large plug that plugs directly into a USB port
because it may not physically fit if there is something plugged
into an adjacent port. Also a tug on the cable can break the
USB connector loose from the motherboard. Buy one that
plugs into the computer with a cable. You can get the one we
recommend here for $18.
Assuming you purchased this one, crimp an RJ-11 telephone plug on the end of your
control cable as follows:
With the clip away from you and the wires entering from the left, pin 1 is on top.
There are 6 wire positions on the connector, but the top and bottom ones may not
have contacts. Crimp the wires as follows (This is not how you would wire it for
telephone service):
R+
RTT+
Pin
Pin
Pin
Pin
2
3
4
5
White/Blue
Blue/White
Orange/White
White/Orange
It is recommended that you don’t remove any more sheath than necessary. I have
stripped it way back to show the wire colors.
Plug it into the jack on the RS-422 side, and move the slide
switch to that side.
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Connecting a Sony EVI-D70 to a PC via USB Adapter
for Control Using the EVI-D70 Commander
At the other end, take the green connector that comes with the camera. With the
screws toward you and the wire entering from the top, the terminals are numbered
1-9 left to right. Connect control cable as follows:
T+
TR+
RGnd
Pin
Pin
Pin
Pin
Pin
1
2
3
4
5
Blue/White
White/Blue
Orange/White
White/Orange
Brown/White (Optional)
R means receive, and T means transmit.
White/Blue means a white wire with a blue stripe.
Blue/White means a blue wire with (perhaps) a white stripe.
Upon close examination, you will discover that the polarity seems backwards, i.e. T+
connects to R- instead of R+. This is not an error.
Examine the bottom of the camera, you will
see four tiny slide switches. The default
positions are all down (toward the back of the
camera). To enable RS-422 operation, move
switch 3 up, the others should remain down.
Do this while the camera powered off.
Plug the green connector into the camera, as
well as power and video.
When you connect the adapter to your PC,
the driver should automatically install from
the Internet. You shouldn’t need the CD that
came with the adapter, except for the
documentation. Download, install, and run
the D70 Commander software and you should be operational. You will know
immediately if it is because the control panel with the yellow square appears,
otherwise you will get an error message.
Pin 5 on the green connector is ground. Since the camera will probably be plugged
into a different power circuit than the PC, electrical noise can be introduced into the
system reducing it's reliability. Sony recommends connecting the ground. To do this,
connect the Brown/White wire to pin 5 (as shown in the photograph), and at the PC
end, leave the Brown/White wire long so that you can ground it to the PC. You could
use a short 4-40 screw into an unused hex post, for example, where a VGA connector
thumbscrew would go.
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