
3
Front and Rear Panel Controls and Connections
4 USB Connection
There are two USBUSB connections on the Cronus; one on the front panel and one on the back
panel (J7). Cronus system can use the USB port connect with a PC. This allows for the most
flexibility when planning where to use the system. In a rack unit where the back is inaccessible, or
on a desktop where the back is accessible. Note, only one USB connector can be used at a time.
5 Power 1 & Power 2
The power source indicator is a green LED light displaying that power is ON. The Cronus has a
redundant power source. This means there are two power supplies, so if power supply 1 fails,
power supply 2 will take over powering the system.
6
Keypanel Ports
(backcard)
One Cronus frame can have 32 ports through the use of either an RJ-12 backcard or an MDR
backcard. In all, the Cronus system supports a maximum of 128 ports available for keypanels.
You can also mix and match the backcards (for example, you can have 2 MDR backcards with 2
RJ-12 backcards on the same frame). The MDR backcard is primarily used to connect the three
compatible breakout panels, XCP-32-DB9, XCP-48-RJ45 and the XCP-48-Telco (See “Breakout
Panels” on page 41).
NOTE: Using an MDR backcard (9002-7770-005), you can utilize a DB-9 breakout panel (XCP-32-DB9 9000-7515-000). One DB-9
breakout panel can support all four AIO cards within Cronus.
7 & 9 LINE 1 and LINE 2
Cronus has two power sources; a primary source (LINE 1) and a redundant power source (LINE
2). Both power sources are running at the same time, so that if the primary source fails the
redundant source will be able to power Cronus.
8 Fans There are two fans to cool the power supplies
10,
11 &
12
DB-9 Serial
Connections, USB
Connector and RJ-45
Connectors
There are three ways to connect to a PC from the Cronus, through a DB-9 serial connection (10),
USB connector (11), or an RJ-45 (Ethernet) connection (12). There are six DB-9 serial ports,
however only five of the serial ports are used (J1, J2 [reserved], J3, J4, and J5) and one is
undefined (J6).
NOTE: J1 will always be connected to AZedit. For more information on AZedit baud rates, see
“DIP Switch Settings” on page 8.
13 DB-25 Connection
General Purpose Input Output connection.
NOTE: The pin-out of this connection is not the same as Zeus, ADAM, or ADAM CS.
14
Coaxial and Fiber
Connection
There are four coaxial or two fiber connections used to connect the frames together. See, figure
4B for the configuration illustration. Requires optional licensing firmware. Contact Telex
Customer Service for more information. When contacting Customer Service be sure to have the
MAC address for each unit. For information on how to obtain the MAC address, see “Finding the
MAC Address for Cronus” on page 26.
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