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The available indicators are: 

USB / battery status: this indicator will display USB

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 when a valid 5V USB connection is available.

 

This will be true even if the connection is through a wall wart charger, so it does not actually means a

 

data connection but a power bus connection. Alternatively, a battery icon with charge level indicator

 

will display when the 

Spectrum Analyzer

 unit power switch is set to ON. If both connections are 

enabled,

 

then USB and Battery will alternate and, in this case, the battery will be charging.

Sweeps per second: this is an approximate value of the number of full screen sweeps happening

 

every second. In the example above, there are 5 sweeps per second or, in equivalent terms, one

 

sweep every 200ms.

Calculator mode: this indicator may have different values as specified by the Calculator mode in the

 

frequency menu. Please check the section Frequency Menu in page 15.

DSP mode: this indicator shows the actual value being used by the Analyzer. The 

DSP:Auto

 is the

 

recommended setting in the Frequency Menu

. The spectrum analyzer

 will select the best

 

possible 

option as per below:

o

FST: Fast mode. This is the standard mode available in all models.

o

FIR: Filter mode. This is available in the 15-2700MHZ and Plus modules only, and is the

 

recommended one for those models.

Marker: There are different operational modes for the marker, see Configuration Menu in page 21.

The analyzer screen can be turned into advanced mode using the [Return] key: 

Note the frequency axis indicators changes at the bottom. 

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 USB refers to Universal Serial Bus, the standard connectivity bus in all modern computers. Our fellow HAM 

users should not confuse this with Upper Side Band communication, even though uses the same mnemonic. 

www.latnex.com/spa 

www.emrss.com/latnex-analyzers

Toll-free number  1(855)267-2582 

[email protected]

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Summary of Contents for SPA-50K

Page 1: ...User Manual SPA 50K 50KHz 960MHz SPA 3G 15MHz 2700 MHz SPA 6G 15MHz 2700MHz and 4850MHz 6100MHz www latnex com spa www emrss com latnex analyzers Toll free number 1 855 267 2582 info latnex com 1...

Page 2: ...ndling with SET button and a silicone rubber protector The unit also includes one RF connector 50 ohm impedance standard SMA format Important The internal battery power switch must be in the ON positi...

Page 3: ...m to 110 dBm Configuration settings such as amplitude reference and frequency span are preserved between sessions stored in internal FLASH memory The main screen automatically displays a small marker...

Page 4: ...mode in the frequency menu Please check the section Frequency Menu in page 15 DSP mode this indicator shows the actual value being used by the Analyzer The DSP Auto is the recommended setting in the...

Page 5: ...another You can exit from a menu anytime by using the Return key The first time you click on Menu button Frequency Menu will open This may change as we will see later so every time you click on Menu f...

Page 6: ...ons enumerates the installed RF modules and how each one is connected to each SMA RF port This example below shows a standard SPA 3G with a 240 960MHz connection on the left port and 15 2700MHz on the...

Page 7: ...y useful to select frequency range between two frequencies of interest with no need to manually calculate the Center or the Span The valid values for Frequency and Span are defined based on LATNEX SPA...

Page 8: ...ctrum Analyzer main screen Note While SPA Spectrum Analyzer screen is enabled the Left and Right buttons can be used to increase or decrease the Start Stop frequency virtually moving the visible spect...

Page 9: ...a 10MHz span each of the 112 measurement steps represents 10MHz 112 0 089MHz or in other words 89KHz2 The range of frequencies represented on each sweep step is a level of uncertainty screen resoluti...

Page 10: ...ortunately this is not the case with the RF analyzer The design of the internal DSP includes sophisticated internal tables and algorithms to make the best possible choice at all times automatically No...

Page 11: ...e anytime you want to detect activity for a long period of time It is a very powerful mode to detect activity in busy bands such as 2 4 GHz As this is a cumulative mode while on Spectrum Analyzer scre...

Page 12: ...or 30dB nominal wideband attenuator use for linear measurement up to 0dBm LNA low noise wideband preamplifier use for linear measurements up to 40dBm Note this option requires more battery power than...

Page 13: ...on screen by using Left and Right buttons When this mode is selected the standard functions to move Center Frequency or Span are disabled o None The marker is not displayed DSP The DSP Digital Signal...

Page 14: ...reset with data stored is selected the last line of the screen shows the Start Stop frequency range of the preset to help on determining the specific preset configuration before using it This line wil...

Page 15: ...een shows when additional text is available for scroll Use UP and DOWN arrow key buttons to scroll text one line at a time or LEFT and RIGHT arrow key buttons to scroll text full page at a time Help o...

Page 16: ...tch the transmitter ON without a proper antenna you may damage the RF module of your SPA Spectrum Analyzer as the power amplifier will not have a load to feed Think of the equivalent to an audio ampli...

Page 17: ...r switch to ON position otherwise the device will be running from USB but will not use or charge the internal battery The RF signal analyzer may draw up to 500mA according to USB standard and may take...

Page 18: ...power switch is in the ON position the battery will charge However you can get additional information when using the Battery specific menu Inside this INTERNAL BATTERY charger screen it is easier to r...

Page 19: ...voltage the internal charger considers 100 capacity This reference is subject to change over time as the internal battery reduces total capacity over many charge cycles As a reference 500 charge cycle...

Page 20: ...ernal battery charger will take care of the battery conditions once it gets powered back from the USB and will charge the battery using an internal efficient algorithm For that to work properly when t...

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