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Chapter 1
Introduction
3
What’s new in this release
The major changes to this release of the Legend software are:
• time scheduling added ( Time schedule page on page 57);
• image freeze on presets added ( Edit page on page 44);
• Pelco D (autobaud), Pelco P, and Tyco/AD (RS-422) ( Appendix B, Compatible commands ) protocols
added ( Table 2 on page 4)
1
;
• streaming position reporting added when data is connected to the AUX RS-485 connections;
• alarm reporting added for the Impac (RS-485) and Tyco/AD (RS-422) protocols; and
• overall performance increased.
Note: The Pelco D autobaud protocol provides autobaud detection between 2400, 4800, and 9600 baud. Alarm
reporting is a nonprogrammable feature. Refer to the protocol’s manual for details. Streaming position
reporting is disabled when the protocol switch is set to A for the Tyco/AD protocol. On-request position
reporting continues to be available with the Impac (RS-485) protocol delivered through the MAIN RS-485
connections. It is not in ASCII format as is the streaming position reporting data.
If you purchased a v2.1.9 or later Legend dome, then you have the new AHC (active housing card) that is
required for some of the recent software changes. If you are upgrading a Legend dome that has an earlier
version of software, you may or may not have to retrofit the dome with a new AHC. It depends upon what
features you want to use. The most commonly used features do not require the new AHC.
Table 1 lists what software upgrade changes are usable with the current AHC and which are usable if you
retrofit the AHC.
If you need to retrofit the AHC, it can be retrofitted in the field. Contact GE Technical Support for one AHC
retrofit it per dome. See
Appendix C, Software upgrade instructions .
1. The version numbers of these protocols are as follows: Pelco D as documented in the Pelco Engineering Design Standard
numbered TF-0002 version 1 rev 1; Tyco/AD as documented in the American Dynamics user guide numbered 8000-2694-01
rev. B; and Ultrak as documented in the Diamond Electronics
FastScan/SmartScan Communication Protocol Document
dated August 13, 1994.
Table 1. Upgrade features available with and without retrofitting the AHC
Upgrade software only Upgrade software and retrofit AHC
Time scheduling Time scheduling
Image freeze on presets Image freeze on presets
Pelco D and Pelco P protocols Pelco D and Pelco P protocols
Tyco/AD protocol
Streaming position reporting with AUX RS-485
Alarm reporting with Impac (RS-485) Alarm reporting with Impac (RS-485)
Alarm reporting with Tyco/AD (RS-422)
Increased performance Increased performance