Lectrosonics VI24 - Manual (Page 3)

Video Switcher Interface
FCC PART 15 NOTICE
This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. If this
equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
FRONT PANEL CONTROLS AND FUNCTIONS
LECTROSONICS VI 24
VIDEO SWITCHER INTERFACE
EXPANSION
PWR (CH40)
PC PORT
(RS-232) TEST RUN
EXPANSION JACK
The LecNet expansion jack is for connection to the mixers being monitored. It is not necessary to connect anything
to this jack while programming the VI24, though if a connection is available, the VI24 software can detect and display
information about any connected mixers.
PC PORT
The PC Port is used for programming and controlling the VI24 using the accompanying VI24 software. Simply
connect it to a serial port (e.g. COM1 or COM2) of the computer.
Note: It is possible to use the VI24 software to create and store a configuration, then program the VI24 at a
later time. Thus, a setup can be conceived and created on a laptop computer en route to an event.
TEST/RUN SWITCH
The VI24 operates normally (and the led glows steadily) when the Test/Run switch is in the “run” position. In the
“test” position, the led flashes and each of the 24 logic outputs is asserted in turn for one second. After 24 seconds,
the cycle repeats, starting with the first logic output again. The test function is intended to assist the user in narrow­
ing down problems. If the video switcher faithfully executes the functions associated with each of the output pins in
test mode, neither it nor the associated wiring is at fault. To exit test mode, simply return the switch to the “run”
position.
Note: The led can flash in run mode. See the section on the led for details.
LED
The led serves as a power and status indicator. In test mode, the led flashes once a second. During normal opera­
tion, the led glows steadily. The led flickers slightly during programming transfers, to indicate activity. When the unit is
first powered on, the led may flash about five times while the memory is being initialized. This will not happen if the
memory was initialized during factory testing procedures.
POWER JACK
The VI24 requires a Lectrosonics CH-40 charger (included with the VI24) for power. While the VI24 has no power
switch, it uses very little power. It may safely be connected to a switched outlet such as a power strip in a rack.
Rio Rancho, NM – USA 3