Unit installation
6-18
RLC-3 V1.80 Copyright © 1998 Link Communications Inc. 9/17/98
Private Mailboxes:
Private mailboxes allow you to leave voice mail in someone's private mailbox. To do this you have
to know the number of their mailbox. There are 1000 private mailboxes, so everyone in your club
can have their own. Each private mailbox can hold up to five messages at a time. You can retrieve
or delete the mail in your own mailbox without affecting anyone else's mailbox.
Interfacing:
The DVR can be ordered with or without an optional rack mount cabinet. There is not enough
room to mount it inside of the RLC-3 cabinet. Instead, there is a small interface board that plugs
into the RLC-3 motherboard's "DVR Connection", near the power plug. This interface board
should be installed with the chips and connector towards the edge of the RLC-3 motherboard (and
the blank side of the interface circuit board toward the radio cards). A short ribbon cable connects
this interface board to a DB-25 female connector that is mounted to a rectangular metal panel.
This panel should be placed inside the cabinet behind the top horizontal rectangular cutout in the
back of the cabinet. Four screws put into the corners of the panel from outside the cabinet hold it
in place.
A DB-25 male-male cable (included) plugs into this connector and into the DVR. The only other
required connection to the DVR is power (12 volts, center positive, plug included). Optional
connections include a backup power plug that can be connected to a battery pack or another power
supply (make sure ground is common between the supplies) to preserve the messages stored in the
DVR if the main power goes out. The remaining connector can be connected to a computer or
serial terminal (more about that later). Note that this serial port is separate from the serial port on
the controller.
Memory Installation and Testing:
The DVR supports four different memory configurations, all using 70ns or faster standard 30 pin
simms. Either 8 or 9 bit wide simms can be used; the parity bit is ignored. You may be able to
find 8 bit wide simms cheaper (they are used in Macs). Each configuration requires a different set
of EPROMS in the DVR:
Two one megabyte simms (2 megabytes total)
Four one megabyte simms (4 megabytes total)
Two four megabyte simms (8 megabytes total)
Four four megabyte simms (16 megabytes total)
If only two simms are installed, they must be in the RAM #1 sockets. Note that all of the simms
must be the same size. All of the memory is tested each time the DVR is powered up. If you want
to see the results of the memory test, connect a computer or serial terminal to the DVR (it need not
be connected to the RLC-3 at this time) and power up the DVR. You should see a printout on the
serial screen noting how much memory is expected (based on which version of the EPROMS you
have) and then how the memory test is progressing. If the DVR does not run at all, check the
power and the serial connection. The DVR will attempt to run even if errors are detected during
the memory test. If the memory test indicates that there are many errors, you may have the wrong