12/24/07
888-2685-001
4-41
WARNING: Disconnect primary power prior to servicing.
Section 4 RF Testing
Ranger Commissioning Manual
Figure 4-23 MER Measurement Block Diagram
NOTE:
This diagram shows the measurement being taken from fwd coupler DC1 of the
filter assembly. If desired the measurement can also be taken from exciter output
and fwd couplers of the transmitter.
4.3.4
1PPS Source Setup
a.
The following setup is required when a 1PPS source is not available at the testing
site.
1.
Disconnect the GPS RF input from the exciter you are not testing. This is
located on the top of Transmitter rack A.
2.
Connect this GPS RF feed to the Synpaq III 1PPS source “ANTENNA”
input.
3.
Connect the AC power adapter to the Synpaq III 1PPS source “DC
POWER” input.
4.
The Synpaq III “1PPS” output will now be active and will require a Phono-
M to BNC-F adapter.
4.3.4.1
FSQ Connections
a.
Connect the FSQ analyzer to an AC source.
b.
Connect the 1PPS source to the FSQ rear port labeled “EXT TRIGGER/GATE
IN”.
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