MNC-0000-015
6 of 10
Revision F
Operation Addendum, Block Upconverter
The output frequency accuracy depends on the accuracy of the refer-
ence and IF frequencies. The determining ratios for the frequency
Bands are:
•
Ku Band — (12.8 GHz / Reference Frequency) X Reference
Offset = Output Offset.
•
C Band — (4.90 GHz / Reference Frequency) X Reference
Offset = Output Offset.
•
X Band — (6.95 GHz/Reference Frequency) X Reference
Offset = Output Offset.
•
DBS Band — (16.35 GHZ/Reference Frequency) X
Reference Offset = Output Offset.
Reference Offset is in MHz.
2. In the internal 10 MHz configuration there is a built-in 3 min delay
(factory set) to allow the 10 MHz reference to stabilize. During
this period the transmit indicator light will blink GREEN and
increase blicking rate every 15 seconds until the warm-up is
completed. At the end of the warm-up the transmit indicator light
becomes solid GREEN.
3. To turn ON the HPA (High Power Amplifier) refer to the chapter
titled
Operation
. The internal attenuator must be set to minimum
value and gradually increased to achieve rated power.
The input power to the BUC should not exceed -17 dBm to minimize
system spurious output. The maximum safe IF input power level is 10
dBm to avoid damage to the internal converter circuits.
4. Refer to the appendix titled
Protocol Addendum, Block
Upconvert
for a description of the protocol and system interface
to the BUC. The BUC, and optional internal reference, have an
internal lock detect which senses the presence of the reference
frequency and proper functioning of the internal PPL (Phase
Lock Loop). The absence of either the reference frequency or a
loss of lock in the PLL results in a system fault and the system
internal fault detection circuit disables the HPA high voltage
circuit. The behavior of the reference detection faults is
configurable. See the “External Reference Detection” and lock
behavior options sections
Note
The power levels and frequencies discussed in the
paragraphs above are representative of typical BUC
performance. The specific power levels and
frequencies that the BUC in the HPA that this manual
apply to are identified in the appendix titled
Product
Specification
.
EAR EXPORT CONTROLLED: The information contained in this Manual refers or relates to a product that is subject
to the U.S. Export Administration Regulations (EAR). Transfer of data herein by any means to a Foreign Person,
whether in the U.S. or abroad, may require an export license from the U.S. Department of Commerce.
