Maintenance Testing; Sample Test Points - Comtech EF Data UT-4500 Series Installation And Operation Manual

UT-4500 Series C- and Ku-Band Up Converters
Appendix B
B.2 Maintenance Testing
The UT-4500 is an Up Converter. It translates the input IF frequency from 52 to
88 MHz (or, optionally, from 104 to 176 MHz) to an output RF frequency. (For
example, the Model UT-4505 RF output frequency range is from 5845 to 6425
MHz.) The IF input level is -35 dBm (typical), and the RF output level is+10 dBm
@ 1 dB compression.
Figure B-2. UT-4500 Front Panel (UT-4505 Shown)
Figure B-2 identifies the UT-4500 front panel features:
• Item 1 – Rack handles. See Chapter 3. INSTALLATION AND SETUP 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 IF input and the RF output:
• The 'IF' BNC female connector provides the IF input.
• The 'RF' Type 'SMA' female connector provides the RF output. An
optional RF LO monitor is available that replaces this RF monitor
connection.
The sample output level for both connectors is -20 dBc nominal.
(TOP) Initially Released Chassis
(BOTTOM) Current Production Unit
B–2
MN/UT4500.IOM
Revision 3