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5) Trigger input port: The external triggering mode of S3302 series is available. The scope of trigger source
must be -5V to +5V when connecting the external trigger source to the trigger input port of the Spectrum
Analyzer. Rising edge trigger or fall edge trigger can be set by the software.
6) GPS antenna port: This port can be use for connecting GPS antenna device for locating current position of
the Spectrum Analyzer.
To better protect the Spectrum Analyzer, some identifiers are provided at the test port of the device. The user must pay attention to the content on these
identifiers when using this device, in order to avoid any permanent damage to the device.
Refer to 2.4 for details of instrument symbols in the figure.
2.3 Digital interface
1) Mini USB interface: It is used for connection of the external PC, which is used for program control or data
transmission of S3302 series through the program control commands or function library.
Equipment drive should be installed for connecting the device to PC through USB interface for the first time.
2) USB A type interface: This interface is used for connecting USB peripheral equipment, such as USB storage
device, USB power detector.
3) LAN (network) interface: This 10/100Mbps network interface can be connected by the network cable to the
computer (PC), which is used for program control or data transmission of S3302 series through the program
control commands or function library.
4) SD card slot: This Micro SD card slot can bed used to extend the storage space of the device.
5) Headset jack: This is a standard headset jack for 3.5mm/3 line for audio output of FM/AM/SSB
demodulation. When a headset is not connected to this jack, the audio output will be realized through the
loudspeaker of the device. When a headset is connected to this jack, audio output will be automatically
switched from the loudspeaker to the headset.