Operating Manual Vol 1 - ES Documentation

Digital Standard GPSSMIQSET RF AND POWERDEFAULTTRIGGER MODEEXECUTE TRIGGERTRIGGER...Sets the RF default setting for GPS:• The frequency FREQ is set to the GPS carrier frequency L1 of 1.57542GHz.• The output level LEVEL is set to –125.0 dBm.IEC/IEEE-bus command :SOUR:GPS:PRES:RFConfiguration of autorun control of generated GPS signal.AUTO The GPS signal calculated in realtime is immediately output andcyclically repeated. Trigger events are ignored.IEC/IEEE-bus command :SOUR:GPS:SEQ AUTORETRIG The GPS signal calculated in realtime is immediately output andcyclically repeated. A trigger event causes a restart fromthe first navigation data bit.IEC/IEEE-bus command :SOUR:GPS:SEQ RETRARMED_AUTO Only a trigger event causes a start of the GPS signal fromthe first navigation data bit. Further trigger events areignored.IEC/IEEE-bus command :SOUR:GPS:SEQ AAUTARMED_RETRIG Only a trigger event causes a start of the GPS signal fromthe first navigation data bit. Any other trigger event causesa restart.IEC/IEEE-bus command :SOUR:GPS:SEQ ARETExecutes a trigger event to start the GPS signal.IEC/IEEE-bus command:TRIG:DM:IMMOpens a window for selecting the trigger source, configuring trigger outputsignals, and setting the delay of an external trigger signal.TRIGGER SOURCEEXT TRIGGERDELAYSelects the trigger source.EXT The GPS signal is started from the firstnavigation bit with the active edge of anexternal trigger signal. The polarity, triggerthreshold, and input impedance of theTRIGIN input can be changed in the DIGITALMOD - EXT INPUTS menu.INT A trigger event is manually started byEXECUTE TRIGGER.IEC/IEEE-bus command :SOUR:GPS:TRIG:SOUREXTSets the number of chips by which an external triggersignal is delayed before it starts the GPS signal. Thisis used to set up synchronization with the DUT orother units.IEC/IEEE-bus command:SOUR:GPS:TRIG:DEL 31125.5555.03 2.336E-9