MNC-0500-026 17 of 32 Revision G
Amplifier Communication and Protocol, Rabbit CPU
Attenuator Counts
Command Byte: ‘8’
Response: “XXXX” counts, ranging from 0 to 4095. This is the value written
to the D-to-A converter which controls the attenuator. For estimated
attenuation in dB, use the Advanced Query with parameter ‘a’.
Compatibility: Attenuator required. Not available when querying analog
HPAs via a controller.
Current Screen
Command Byte: ‘5’
Response: Returns the amplifier’s current screen. Xicom’s digital rack HPA
has a Vacuum Flourescent display with four lines of twenty characters each.
The response is four 20 character strings, each terminated by ‘!’ for a total of
84 characters. Xicom’s digital outdoor controller has a Vacuum Flourescent
display with one line twenty characters wide. Since it emulates the HPA
command set, it will respond to this query, but it only returns a single 20
character string. Xicom’s digital ODU has no display, it internally maintains
the same menu system as Xicom’s digital rach HPA. A digital ODU returns
four 20 character strings, each terminated by ‘!’.
Compatibility: Not available when querying analog amplifiers via a
controller.
Fault History
Command Byte: ‘4’
Response: A list of the last 100 faults. Each fault string has the following
format: “AAAAAAAA YYMMDD HHMM!”
The first eight bytes describe the fault, and the remaining bytes serve as a
time-stamp. Each string is terminated by ‘!’; the last string in the sequence is
followed by an additional ‘!’.
Compatibility: Not available when querying amplifiers through controllers.
Query Frequency
Command Byte: ‘T’
Function: Tells unit what frequency it is running at.
Response: “TXX.XX”
XX.XX is the frequency in GHz
Notes: Affects reported power in outdoor controllers (XTC-100D) only.
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.
To Next Page
Loading...