Grass Valley iRouter v.6.01 - Manual (Page 57)

iControl Router
User Guide
53
• 2 stop bit
Figure 3-6: RS-232 serial cable
Depending which Pesa router controller you have, it may be possible to change the bit rate to
38,400 baud. The Pesa driver has been tested at that speed but it seems to generate a lot of
errors during transmission, so it is not recommended to use 38,400 baud. Please be sure to use
9,600 baud rate when configuring the Pesa controller. This driver uses the PESA checksum, as
opposed to HEXA or NONE.
When configuring a Pesa router in iControl Router, make sure you configure ALL levels starting
with level #1. If your router is using level 1, 2 and 3 and you only want to control level 3, you
must also configure physical levels 1 and 2 in iControl Router.
Unsolicited Status Protocol (Pesa USP)
The primary medium for the USP is an asynchronous full-duplex connection that is usually run
over RS-232 or RS-422 (this is dependent upon the control system). Data is transmitted over
the bus asynchronously. The data is sent at user selectable baud rate (default to 38.4 K Baud)
with 1 start bit, 8 data bits, no parity, and 1 stop bit. The default method of handshaking is
RTS-CTS control though some controllers may allow for methods such as XON-XOFF.
If you want to use a high communication speed (for example, 38,400 baud), you should use
this driver. However, be really careful because this protocol is label-based and you must
correctly define all the physical source and destination labels in Router Manager in order to
make this driver work properly. This driver does not use checksum.
Notes
• This driver does not support unsolicited crosspoint changes. This means that
a crosspoint changed via a control panel will not be reported to the other
panels until the next polling. The polling is currently set to 5 sec.
• Crosspoint changes made using matrix or single bus are applied rapidly but
the matrix button reporting the status will not be selected until the next
polling. Thus a crosspoint status will take between 0 and 5 sec to display on
the matrix.