User's Manual

Application Note 16 – version 1.1
page 5
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plication Note
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3.4 Connecting External Cabling
6) Connect the E1 or T1 cabling directly to the E1 or T1 card using individually-shielded twisted-pair
cables, using the standard RJ-48C pinout. The RJ-48C pinout is as follows: Pin 1 – Receive
Ring/Shield; Pin 2 – Receive Tip; Pin 4 – Transmit Ring/Shield; Pin 2 – Transmit Tip.
When you are connecting the TurboMAX directly to another TurboMAX or another piece of
equipment via an E1 or T1 port, make sure you use a crossover cable that connects the Receive leads
to the Transmit leads.
7) The TurboMAX comes in two configurations: low-power, with a single antenna, or high-power, with
up to three antennas.
When you are adding an antenna to a low-power TurboMAX, connect the antenna to the N-type
connector on the Antenna Plate Assembly on top of the TurboMAX.
When you are adding antennas to a high-power TurboMAX, make sure you connect one antenna to
each of the three N-type connectors on the Antenna Plate Assembly on top of the TurboMAX. Since
one antenna is shared by the receive paths for all TurboMAX TRXs, and since one antenna for the
transmit path for each TRX, you must connect an antenna to all available N-type antenna connectors.
8) If required by local codes, ground the TurboMAX chassis by loosening a nut inside the Cable
Management Assembly and tightening the grounding wire under the nut, per local requirements.
9) Connect any customer-defined alarm inputs to the external alarm terminal block as follows: Make
sure the external alarm inputs use normally-open relay contacts. For Alarm Input 1, connect the
alarm relay across terminal block pins 5 and 6. For Alarm Input 2, connect the alarm relay across
terminal block pins 5 and 7. For Alarm Input 3, connect the alarm relay across terminal block pins 5
and 9.
10) Connect external power to the two (Main and Amplifier) power supply units as follows:
When you connecting –48VDC to the two chassis power supplies, (1) set the circuit breaker on both
power supplies to OFF, and (2) connect the –48VDC leads from the power source to the terminal
blocks on the front of both power supplies. Leave the circuit breakers OFF.
When you connecting 110 through 230 VAC to the two chassis power supplies, (1) set the circuit
breaker on both power supplies to OFF, and (2) connect the AC cables from the power source to the
IEC 320 receptacles on the front of both power supplies. Leave the circuit breakers OFF.
3.5 Off-Line Commissioning
11) Turn on power to the TurboMAX chassis by setting the circuit breakers on both power supplies to
ON.