12/24/07
888-2685-001
2-17
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation Verification &
Ranger Commissioning Manual
PA SAMPLE IN (SMA) should have a cable connected to it that comes from the output
of the transmitter power amplifier, taken before the HPF and after the PA combiner for
transmitters with multiple PAs. It is used by RTAC™ to correct for the nonlinear
distortion caused by the power amplifier. Normal input signal range is -30 dBm to 0
dBm. The input impedance is 50 ohms.
IPA SAMPLE IN (SMA), is not used. There should be no cable connected to this
exciter input.
RF OUT (SMA) should be have a cable connected to it. This is the on-channel RF
signal output from the exciter. The output level is adjustable up to 250 mW average but
is intially adjusted to produce an 80 ALC value on the transmitter GUI display.
EXC/CTRL UHF (25 Pin D) should not have a cable connected to it.
CAN (controller area network) should have a cable connected to it. The connector is a
provision for the exciter to communicate with the transmitter GUI (graphical user
interface) system controller.
LAN 10Base-T should have a cable connected to it. The connector is a provision for
connecting the exciter to a local area network.
RS232 (on front and rear panels of exciter) is a 9 Pin D interface connector and they
should not have cables attached to them. They are used to communicate with various
computer applications. The front and rear panel connections can be programmed and
used independently of each other.
2.11.1.2 AC Power
AC Power is applied through a standard power cord to the connector at the right side of
the rear panel as shown in Figure 2-9. The AC inlet connector also contains the power
switch.
The power supply will automatically select the AC input voltage in two ranges. The two
ranges are 85 to 132 VAC or 170 to 264 VAC
2.11.1.3 Verify Installation of the GPS 1PPS Signal
The GPS (global positioning system) 1PPS (1 pulse per second) signal has a rise time in
the order of a few nanoseconds. It is delivered by a 50 ohm transmission line to the
exciter. Improper termination can cause ringing on the pulse, which, if severe enough
can cause timing errors in the system. The 1PPS signal must be properly distributed and
terminated to avoid the ringing problem.
Summary of Contents for CZ1000F
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