DT-4500 Series C- and Ku-Band Down Converters
MN/DT4500.IOM
Appendix B
Revision 2
B–2
B.2
Maintenance Testing
The DT-4500 is a down converter. It converts the input RF frequency to an output
IF frequency. The RF input level is -45 dBm (typical), and the RF output level is 0
dBm (typical).
(TOP) Initially Released Chassis
(BOTTOM) Current Production Unit
Figure B-2. DT-4500 Front Panel (DT-4503 Shown)
identifies the DT-4500 front panel features:
•
Item 1
– Rack handles. See
Chapter 3. INSTALLATION AND STARTUP
to
review the installation information and to prepare for checkout.
•
Item 2
– Sample Test Points. See Sect. B.2.1 for details.
•
Front panel operations – See
Chapter 6. FRONT PANEL OPERATION
for
details about using the LEDs (
Item 3
), VFD (
Item 4
) and its menu system,
and the keypad (
Item 5
).
B.2.1
Sample Test Points
Use these test point connections to monitor the RF input and the IF output:
•
The ‘RF’ Type ‘SMA’ female connector provides the RF input. An optional
RF LO monitor is available that replaces this RF monitor connection.
•
The ‘IF’ BNC female connector provides the IF output.
B.2.2
Troubleshooting
When a fault condition is indicated or a marginal performance tolerance
condition exists, you may use the front panel LEDs and VFD to identify the
specific faults and events:
•
The LED status indicators alert you to operating problems.
