Microtel Series 500 - Manual (Page 15)

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for the optional microphone used for the intercom audio monitoring functions. The Card
also contains a small RJ style jack which accepts the carbon element telephone
handset used for entering Real Voice speech for describing all alarm and monitoring
channels.
II.A.9.
Real Voice Memory Card (RV)
The RV Memory Card(s) plugs into System Bus slot 2, 3, or 4. If more than three I/O
cards are used in the system (excluding the Printer Output Card) then the system must
use two (2) RV Memory Cards. The RV Memory Card contains EPROM memories
which are programmed with the system’s “core” vocabulary - those words and phrases
necessary to articulate default messages, numerics, and prompting. Additionally, the
RV Memory Card contains eight CMOS SRAMS into which the CPU places “Real Voice”
speech data programmed by the user during programming of each channel’s
identification. The card has a socket for a lithium battery which must be enabled to
provide long-term protection for the speech data. To enable or replace the RV Memory
lithium battery, refer to the System Maintenance section of this manual.
II.B.
System Description and Familiarization - Option Cards
Various combinations of the following circuit cards may be located in the I/O Option
Card bus on the lower half of the dialer. The cards may be installed in the field, by the
user. The user must program the dialer so that it may recognize what complement of
I/O Option Cards are installed. To select the option boards to be used, see the section
entitled, Setting the I/O Option Card Configuration.
II.B.1.
Digital Input Card
The Digital Input Card contains a terminal strip which will accept eight input channels.
The terminal strip provides two connectors for a common ground conductor. Each fault
sensing current “loop” is provided with 10 mA of sensing current by the system. Each
input channel is programmable for a variety of options, including integration times,
Normally-Open or Normally-Closed operation, call list, and ID Message. Time-In-Alarm
and Totalizer values are maintained by the system CPU for each input channel.
II.B.2
Analog Input Card
The Analog Input Option Card accepts four channels of 4-20 mA signals. Each channel
may have its own label, message, scaling factors, set-points, and archive
configurations.
II.B.3.
Digital Output Card
The Digital Output Option Card contains four SPDT 5 amp relays. The relays may be
operated over the telephone line using telephone tone commands.