Epiphan Pearl - Manual (Page 310)

Pearl User Guide Control with RS-232 / serial port
Table 35 Serial Port Flow Control Options
Label Description / Options
Hardware
A hardware handshake mechanism is used for flow control. This is also called RTS / CTS flow
control. Select this when your control terminal requires it (see control terminal manual).
Software
A software handshake that uses XON/XOFF characters to control the flow of data. Select this
when your control terminal requires it (see control terminal manual).
None
No flow control is used. Only select this if your control terminal requires it (see control ter-
minal manual).
5. Click Apply.
Control Pearl with RS-232
You can use the null-modem cable and your control terminal software to issue commands to Pearl such as
when to start or stop recording, or to retrieve or set the value for various settings.
Each command sent to Pearl via RS 232 must be terminated with a line feed (LF) character
(ASCII code 10). Your software may need to be configured to add the line feed to each command.
Some commands require a channel or recorder name as an argument. In those commands, the channel or
recorder name is separated from the command name by a period, as shown in the table. The channel name
value can be either the name or the index of the recorder or channel. Use of the index is recommended.
A channel's index is found by looking at the Channels list in the web interface. In the screen capture below, the
channel with index 1 is currently recording (it's index number is red). To address this channel via RS-232
commands, use the index 1.
For commands requiring a recorder index, determine your recorder's index by combining the recorder's
number with the prefix m. In the example below, the second recorder's index is 2. To access this recorder via
RS232 commands, use the index m2.
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