The Unaohm S22 is a handheld satellite spectrum analyzer with built in QPSK analysis capability.

The Unaohm S22 spectrum analyzer is the ultimate handheld device to install, diagnose and troubleshoot SAT and 2-way VSAT systems. The S22 is fairly simple to use: First, you select one of three modes (MEAsure, SPECTrum or BER), send voltage to your LNB(F), 22KHz and/or DiSEqC, all with the touch of clearly identified single function keys. Next, you type in or dial your frequency using the alphanumeric keypad or the 11/4" dial. Once you've located your satellite, you can set your span in SPECTrum mode for more detailed analysis. You can also get an instant analogue or digital readout, call a second marker for analogue C/N measurement or you can go in BER mode for further analysis. In BER mode, you punch in your Symbol Rate and analyze your digital transponder and NIT information, which will provide satellite identification, orbital position and a list of the services available. If that's too much to remember, simply do it once and hit STORE twice to save all your parameters in one of the S22's 99 memory positions! When you recall a preset position, simply switch between MEAsure, SPECTrum or BER mode depending on what you are doing (locating, peaking or analyzing your signal). This instrument is therefore ideal for the identification and peaking of analogue and digital signals. The main advantage of the S22 is its size, but unlike other instruments, it does not compromise on quality, durability and accuracy: Quality is one of Unaohm's trademarks. All instruments are made in Italy and must go through individual quality control before being released on the market. The components used inside and outside each instrument guarantee years of service without any or very little maintenance. Durability wise, the sturdy case of the S22 is further protected against falls and blows by a thick rubber holster. The weatherproof keyboard and the RF input connector have also been designed for construction site environment , where hostile elements such as dust and humidity are present. When it comes to accuracy, Unaohm only incorporates the best RF components in its instruments. Furthermore, each S22 is individually calibrated to ensure accurate level and frequency readout. Frequencies on the S22 can be selected with 0.1MHz precision and the level readout is available with 0.1dB accuracy in analogue and digital mode. For Unaohm's spec sheet (in PDF format), click here. For an example of on-the-field use, click here.

the Unaohm S22 online.   [click on the images for larger view]

Log capabilities of up to 1500 acquisitions.
Satellite identification (optional NIT card required).
Cumulative count of errors over time.
Hold mode (MIN or MAX) to catch sporadic signal presence or interference.
DiSEqC 1.1 and 1.2 protocols (preset and user configurable functions).
Aural tone in MEAsurement mode with higher tone pitch when the signal gets stronger.
Automatic and Manual attenuation modes.
Histogram representation (DLPrg) of 1 to 27 user-defined frequencies.
Tilt function in DLPrg mode to compare max and min levels along with level delta.
Up to four user-defined L/O frequencies for direct satellite frequency readout.
User-defined level measurement unit (dBm, dB or dBµV).
RS232 interface to preset or extract program information.
Printer interface with logo (installer or company name) to printout results on the field or back at the office.

Level and Frequency Range:

Unit of Measure:

Attenuation:

5 MHz @ -3dB.

Female “F” connector with a protective L-shaped adapter.

Maximum Applicable Voltage:

LCD Indication:

• Numeric for level, four digit, 0.1 dB resolution.
• Numeric for DCP, four digit, 0.1 dB resolution.
• Analogue by means of a bargraph.
• Analogue by means of a histogram.

Frequency Range:

• 920 to 2150 MHz.
• ± 2 dB accuracy throughout the entire frequency range.

Tuning Selection:

• By frequency. Continuous PLL frequency synthesis in 125 kHz steps.
• By program. Recall of any program out of those stored, up to 100.

Frequency Reading:

• Frequency reading is rounded off to the nearest 100 kHz in IF mode and to the nearest MHz in L.O. mode.

Spectrum display:

• Spectrum (full and expanded). 200, 100, 50, 20, 10 MHz expansion steps from 920 to 2150 MHz.
• Histogram mode. Up to 28 user-defined-program.
• Hold max, Hold min, Freeze.
• Two independent markers for frequency and level reading; reading of differences between markers on LCD readout.

Data Logger:

• Approximately 1500 single program data-captures (acquisitions).

Pictures: