3-7
STRATA TX Operation Guide
400
Rev.
Powering Up and Test
Powering the STRATA Transmitter
3.8
Powering Up and Test
Once the STRATA has been installed, select the method for power a single or
multi-unit system. See "
Power Requirements," Section 3.5 on page 3-3
to
determine which method you are using.
3.8.1
Power Cables
MRC provides the following standard interconnect cables for powering single or
multiple units.
• DC Power Cable with Terminators - This cable is equipped with an 8-pin
power connect on one end with six power and ground terminals on the other.
Use this cable to power either TXU or TCU. For a diagram of the cable, see
Figure 3-15, DC Cable Harness with Terminators (907673) on page 3-9
.
• DC to DC Cable - The cable is equipped with two 8-pin power connectors on
each. Use this cable to connect the DC output from the AC power supply to
either the TXU or TCU.
3.8.2
Check Harness and Connections
Use the following procedure to power and test the system.
Step 1
Check that the power cable harness has been correctly assembled
according to "
Power Harness Assembly," Section 3.4.3 on page 3-2
.
Step 2
Check all coaxial cables and connectors have been properly installed.
Note:
MRC recommends you secure cables with cable ties to provide
strain relief from cables being accidently pulled or crimped.
3.8.3
Powering Individual Units
Whether you are using a single unit TXU or TCU, or an integrated system of TXU,
TCU, and HPU, you should first apply power to the TXU and TCU as individual
units.
Step 1
Disconnect all external connectors including IF, RF, audio, and video
connections.
Step 2
Insert the power connector into the power receptacle on either the front
panel of the TXU or rear panel of TCU. Align the pins and press and
rotate the connector collar until it securely seated (
Figure 3-6 on
page 3-2
).
Step 3
Toggle the front panel Power Switch (
Figure 3-11
) to the ON position
(“1“), the front panel Power LED should glow in amber, red, and then
green.
Figure 3-11 TCU and TXU Front Panel Power Switch
Step 4
If the unit does power up, correctly, check the power supply for
voltage, and re-check all connections.
Step 5
Once you have verified the unit is powered correctly, repeat this
procedure for the TXU or TCU.
3.8.4
Powering the TXU from the TCU
Once you have tested each unit in the system individually, you are ready to test
an integrated system of more than one unit.
Step 1
Connect the IF coaxial cable between the TCU and TXU.
Step 2
Set all front panel power switches to the off position on the TXU and
TCU.
Step 3
Connect power to the TCU.
Step 4
Verify which model of TCU and TXU you are using ("
Model
Variations," Section 3.3 on page 3-1
). If your system has DC
override switches, check switch and menu settings ("
DC
Superimposed Voltages," Section 3.6 on page 3-4
).
Step 5
On the TCU, toggle the front panel Power Switch (
Figure 3-11
) to the
ON position (“1“), the front panel Power LED should glow in amber,
red, and then green.
Step 6
On the TXU, toggle the front panel Power Switch (
Figure 3-11
) to the
ON position (“1“), the front panel Power LED should glow in amber,
red, and then green.
Step 7
If the unit does not power up correctly, check the power supply for
voltage, and re-check all connections. Check switch and menu
settings ("
DC Superimposed Voltages," Section 3.6 on page 3-4
).
ALM
PWR
PWR
Power LED
Power Switch
