Specifications

3-84 888-2857-001 5/9/13
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
3.11.2 DUC/RTAC or UDC Output Status Screen
Figure 3-53 Status DUC/RTAC or UDC/Output
Table 3-57 Xmtr Home>Exciter Home>Status>DUC/RTAC or UDC/Output
Field Explanation
Upconverter Sub Window
IF Level Green indication background is OK, red = fault. IF Level (in mV), range
is 900 to 1100.
RF Level Cut Green = UDC is communicating, Red = fault
Downconverter Level In
Pre-Filter This is a bargraph indication which gives the relative pre- filter RTAC RF sample
level. The maximum signal level span is -20dBm to +5dBm, but, if possible, it is
better to attempt to keep the RF sample levels between -10 dBm and 0 dBm. Since
the sample levels at the sample cable outputs are usually too high, the level is
adjusted by adding appropriate attenuation at the exciter sample input connectors.
Post-Filter This is a bargraph indication which gives the relative post- filter RTAC RF sample
level. The maximum signal level span is -20dBm to +5dBm, but, if possible, it is
better to attempt to keep the RF sample levels between -10 dBm and 0 dBm. Since
the sample levels at the sample cable outputs are usually too high, the level is
adjusted by adding appropriate attenuation at the exciter sample input connectors.
LO Sub Window
LO LevelF Green indication background is OK, red = fault. LO Level (in mV), range
is 2222 to 2427.