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Routine Operation
3-13
STRATA TX Operator’s Guide/Tech Ref Manual
Superimposing DC Power In this configuration, DC power is
superimposed with the IF signals between units and there is no
manual control of DC power from the TCU. The DC power is
superimposed on the coaxial cable between the TCU and the
TXU.
superimposed with the IF signals between units and there is no
manual control of DC power from the TCU. The DC power is
superimposed on the coaxial cable between the TCU and the
TXU.
To turn DC power on and off, the operator uses the TCU and
TXU front panel PWR switches and either the TCU or TXU
control switch and alphanumeric display menus. The TXU DC
ON COAX switch must be set to ON.
TXU front panel PWR switches and either the TCU or TXU
control switch and alphanumeric display menus. The TXU DC
ON COAX switch must be set to ON.
Superimposing DC Power with Manual Control In this
configuration, DC power superimposed on the IF signals
between the units is manually controlled. The operator can
manually turn DC power on or off to the TXU from the TCU or to
the TCU from the TXU using DC ON COAX switches and TCU or
TXU front panel control switches and alphanumeric display
menus.
configuration, DC power superimposed on the IF signals
between the units is manually controlled. The operator can
manually turn DC power on or off to the TXU from the TCU or to
the TCU from the TXU using DC ON COAX switches and TCU or
TXU front panel control switches and alphanumeric display
menus.
The DC ON COAX switches provide the manual control and
must be set to ON to allow application of DC power to the TXU ,
and TCU using the control switches and alphanumeric display
menus.
must be set to ON to allow application of DC power to the TXU ,
and TCU using the control switches and alphanumeric display
menus.
Powering STRATA TX Systems The method you use to power
up your STRATA TX System will vary, depending upon the
following:
up your STRATA TX System will vary, depending upon the
following:
•
The model of your STRATA TX System, whether or not
you have DC power manual override control.
you have DC power manual override control.
•
The transmitter configuration, whether you are using a
single TCU, a single TXU, or a TCU and TXU
single TCU, a single TXU, or a TCU and TXU
•
Whether the TCU and TXU are to be co-located or
physically separated over some distance.
physically separated over some distance.
•
Whether your STRATA TX System contains the optional
AC to DC Power Converter (ACU).
AC to DC Power Converter (ACU).
3.3.4
Single TCU Power Up and Power Down
If your STRATA TX System consists of a single TCU, perform the
following steps:
following steps:
CAUTION
To avoid possible damage, turn off DC
Power on the coax before connecting any
test equipment.
Power on the coax before connecting any
test equipment.
Power Up
1.
Verify the power cable is properly connected to the
TCU rear panel POWER connector.
TCU rear panel POWER connector.
2.
Verify all coaxial cables and connectors have been
properly connected.
properly connected.
3.
Connect the TCU to DC power of the correct voltage
and polarity.
and polarity.
If you are unsure of the power requirements or the
connections, refer to the
connections, refer to the
“Installation” Chapter on
page 6-1
(Part of the STRATA TX System Technical
Reference Manual only).
If the TCU is powered from the optional STRATA ACU,
connect the ACU input to AC power and verify the
TCU power cable is connected to the ACU DC
OUTPUT connector. Set the ACU power switch to I
(on) and verify the ACU power LED is on.
connect the ACU input to AC power and verify the
TCU power cable is connected to the ACU DC
OUTPUT connector. Set the ACU power switch to I
(on) and verify the ACU power LED is on.
If the TCU is powered from a source other than an
ACU, turn that power source on.
ACU, turn that power source on.
4.
Set the TCU PWR switch to I (on).