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SPECTRUMANALYZERS

The burst signal can be measured using the trigger function in time domain measurements. External, video, wide IF video, or line is se- lectable. This makes a variety of TDMA radio equipment tests possi- ble, including template comparison using pre-trigger and post-trigger delay functions and gate spectrum analysis using the gate sweep function. Previously, the trigger output from an external detector was required in gate spectrum analysis. However, this option for the MS2665C has a 20 MHz wide IF video trigger function, eliminating the need for trigger output from an external detector. Spectrum and time domain measurement

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For testing digital mobile communication equipmentHigh-speed time domain sweep (Option 04) Testing of TDMA-type radio equipment includes time domain (zero- span) measurements of antenna power, transient response charac- teristics of burst transmissions, transmission timing, and other quan- tities. The high-speed time domain sweep option boosts sweep time to 12.5 µs and resolution to 0.025 µs. Wide IF video trigger function

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Wide IF video trigger and gate functions High-speed time-domain measurement (TS = 12.5 µs) Trigger/gate circuit (Option 06)

Specifications

Except where noted otherwise, specified values were obtained after warming up the equipment for 30 minutes at a constant ambient temper-ature and then performing calibration. The typical values are given for reference and are not guaranteed.

Frequency range9 kHz to 21.2 GHz Band 0: 0 to 3.2 GHz (n: 1); Band 1–: 2.92 to 6.5 GHz (n: 1); Band 1+: 6.4 to 8.1 GHz(n: 1); Band 2+: 8.0 to 15.3 GHz (n: 2); Frequency bandBand 3+: 15.2 to 21.2 GHz (n: 3)

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n: harmonic order of the mixer Pre-selector range2.92 to 21.2 GHz (band 1–, 1+, 2+, 3+) Frequency settingresolutionFrequency domain: (1 x n) Hz, Zero span: (100 x n) Hz

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n: harmonic order of the mixer Frequency display±(display frequency x reference frequency accuracy + span x span accuracy + 100 Hz x n)accuracy

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Span: ≥ 10 kHz x n (n: harmonic order of the mixer, after calibration) Marker frequencydisplay accuracyNormal marker: Same as display frequency accuracy; Delta marker: Same as frequency span accuracy Resolution: 1 Hz, 10 Hz, 100 Hz, 1 kHzFrequency counterAccuracy: Display frequency x reference frequency accuracy ±1 LSD (at S/N: ≥ 20 dB)
Frequency Setting range: 0 Hz, 1 kHz to 21.3 GHzFrequency spanAccuracy: ±2.5% (span: ≥ 10 kHz x n), ±5% (span: <10 kHz x n, Option 02 installed) Setting rage: 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz, 3 MHz (manually settable, or automatically settable according to Resolution frequency span)

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Option 02: 30 Hz, 100 Hz, and 300 Hz are addedbandwidth (RBW)Measurements of noise, C/N, adjacent channel power, and channel power by measure function are executed with the calculated(3 dB bandwidth)equivalent noise bandwidth of the RBW. Bandwidth accuracy: ±20% (1 kHz to 1 MHz), ±30% (3 MHz)Selectivity (60 dB : 3 dB): ≤ 15:1 Video bandwidth (VBW)1 Hz to 3 MHz (1-3 sequence), OFF

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Manually settable, or automatically settable according to RBW Continued on next page

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