Chapter 14 399
Real Time TDMA Formats
Enhanced Observed Time Difference (E-OTD)
Example 2, Setting Up a Combined Broadcast Channel
This example will setup the ESG to generate a Combined Broadcast Channel at 935.2 MHz with a power
level of −10 dBm. A public land mobile network (PLMN) value of 4 will be chosen and a base station colour
code (BCC) value of 1 will be set. The trigger will be setup in “trigger and run” mode which means that the
ESG will start generating a BCH on receipt of the first trigger and any further triggers will be ignored. The
trigger will be setup to use the external pattern trigger 1.
Reset the ESG to its power on state.
*RST
Select the frequency band, channel and power.
:FREQuency:CHANnels:BAND BPGSm
:FREQuency:CHANnels:NUMBer 1
:FREQuency:CHANnels:STATe ON
:POWer:LEVel:IMMediate:AMPLitude -10dBm
Setup the ESG to have a Combined Broadcast Channel in slot 0 and all other time slots will have a normal
burst with a PN9 sequence in the payload fields.
:RADio:GSM:BURSt:STATe ON
:RADio:GSM:SLOT0:NORMal:ENCRyption BCH2
:RADio:GSM:SLOT1:NORMal:ENCRyption PN9
:RADio:GSM:SLOT2:NORMal:ENCRyption PN9
:RADio:GSM:SLOT3:NORMal:ENCRyption PN9
:RADio:GSM:SLOT4:NORMal:ENCRyption PN9
:RADio:GSM:SLOT5:NORMal:ENCRyption PN9
:RADio:GSM:SLOT6:NORMal:ENCRyption PN9
:RADio:GSM:SLOT7:NORMal:ENCRyption PN9
:RADio:GSM:SLOT0:TYPe NORMal
:RADio:GSM:SLOT1:TYPe NORMal
:RADio:GSM:SLOT2:TYPe NORMal
:RADio:GSM:SLOT3:TYPe NORMal
:RADio:GSM:SLOT4:TYPe NORMal
:RADio:GSM:SLOT5:TYPe NORMal
:RADio:GSM:SLOT6:TYPe NORMal
:RADio:GSM:SLOT7:TYPe NORMal