Introduction To Sis; Symbols Used In This Manual - Extron electronics SSP 7.1 User Manual

Configuration and Control

Introduction to SIS

The SSP 7.1 accepts SIS commands from a host device such as a computer running
the HyperTerminal utility or other control system. The host device can be
connected to the 3-pin captive screw connector on the rear panel or to the config
port on the front panel. To connect to the config port, use the optional Extron 9-pin
D female to 2.5 mm TRS Configuration cable (part # 70-335-01).
N The wiring in the RS-232 cables crosses over so that the processor's TX connects
N Neither port takes precedence over the other. Commands are always processed in
The protocol is 9600 baud, 8 data bit, 1 stop bit, and no parity.
SIS commands consist of a string (one or more characters per command
field). Unless otherwise stated, upper and lower case characters may be used
interchangeably. Commands do not require any special characters to begin or end
the command string. Each response from the SSP 7.1 ends with a carriage return
and a line feed (CR/LF =
string.
When the SSP 7.1 is first switched on, depending on the model, it sends the
message:
© Copyright 2009, Extron Electronics, SSP 7.1, 60-842-01, V 1.xx
is the catalog part number and V 1.xx is the firmware version number.

Symbols used in this manual

When programming in the field, certain characters are most conveniently
represented by their hexadecimal rather than their ASCII values. The table below
shows the hexadecimal equivalent of each ASCII character:
ASCII to HEX Conversion Table
Space
N Apart from G (gain) and g (attenuation), upper and lower case characters can be
]
}
• — space character
E
The
command response table (see page 6-8).
6-2 6-2 SSP 7.1 • Configuration and Control
™
with the control device's RX and vice versa.
the order that they are received and, if simultaneous commands were sent to both
ports, the scaler processes whichever command the communications buffer passes
in first.
]
), which signals the end of the response character
used interchangeably in SIS commands for this product.
— carriage return with line feed
— carriage return (no line feed)
— Escape key
X/
values defined in this section are the variables used in the fields of the
]
.
where 60-842-01