GRASS VALLEY PERFORMER, Инструкция по эксплуатации

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2-45
Installation Reference
Serial Communications Protocol Selection
Performer is designed to allow serial control from multiple
sources. Several communications protocols are serviced; RS232,
RS422, RS485, ASCII and SMPTE are available by setting the
proper switches.
1
Protocols and their applications are listed in
Table 2-7. When you choose and begin setting up a protocol, you
will select protocol, message parity, bit rate, and switcher polling
address. For ASCII and GVG Model 200 protocols, you will also
set serial port data bits at 7 or 8. For other protocols, the data bits
are automatically set at 8. Performer serial port stop bits are
automatically set at 1.
The
Operation
section of this guide contains information
regarding, and examples of, messages in each of the various
protocols.
General Selection Instructions
1. Locate 8-segment switch S2 on the VAA Board (see page
2-10). Note that each switch is numbered (1 through 8)
and has a labeled
open
position and an unlabeled closed
position.
2. Configure S2 according to the protocol you wish to select.
Directions for each protocol are on the following pages.
1. Table 2-6 earlier in this section recaps all switch settings in one location for speedy ref-
erence.