Xicom XTU-400K, Руководство по эксплуатации и установке, Страница: 134 / 189

MNC-0500-002 20 of 36 Revision H
Amplifier Communication and Protocol, Octagon ISA CPU
Current Screen
Command Byte : '5'
Response : Returns the amplifier's current screen. Xicom's digital rack HPA has a
Vacuum Fluorescent 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 Fluorescent 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 rack HPA. A digital ODU
returns four 20 character strings, each terminated by '!'.
Compatibility : Not available when querying analog amplifiers via a controller.
Power in dBW
Command Byte : '6'
Response : "XX.X" dBW. This is the HPA output power in dBW, as adjusted by the
offset factor (entered through the HPA front panel interface for digital HPAs or adjusted
via Controller Command ‘F’, Adjust RF Calibration.) When HV is OFF or RF is not
detectable the response is “<-X”.
Power in Watts
Command Byte : '7'
Response : "XXXX" Watts. This is the HPA output power in Watts, as adjusted by the
offset factor (entered through the HPA front panel interface for digital HPAs or adjusted
via Controller Command ‘F’, Adjust RF Calibration.) When HV is OFF or RF is not
detectable the response is “<X.X”.
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.