IFR 2026Q Operating Manual
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Contents
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GENERAL INFORMATION1-7CONNECTION TO RADIO: <1.6:1 (typically 1.25:1), 865 to 1990 MHz.OUTPUT TO RADIO TESTSET<1.35:1, 865 to 1990 MHz.Maximum safe power (matched)INPUT FROM RADIO TESTSET+19 dBm.CONNECTION TO RADIO: +33 dBm.OUTPUT TO RADIO TESTSET:+33 dBm.Spectral purityHarmonics:Individual outputs: Typically better than −30 dBc for RF levels up to +6 dBm, typically betterthan −25 dBc for RF levels up to +18 dBm (+14 dBm above 1.2 GHz).Combined output: Typically better than −30 dBc for RF levels up to −36 dBm, typicallybetter than −25 dBc for RF levels up to −13 dBm.Non-harmonics: Better than −70 dBc for carrier frequencies up to 1 GHz;better than −64 dBc for carrier frequencies above 1 GHz;better than −60 dBc for carrier frequencies above 2 GHz.Isolation: Better than 80 dB between individual outputs in use.Better than 60 dB from a used individual output to the CONNECTIONTO RADIO.Intermodulation: At an RF output level of −22 dBm at the CONNECTION TO RADIO:Frequency: 2-tone intermodulation:800 MHz to 2 GHz −80 dBcIntermodulation levels reduce with reducing RF levels.Residual FM (FM off): Less than 4.5 Hz RMS deviation in a 300 Hz to 3.4 kHz unweightedbandwidth at a carrier frequency of 1 GHz.Typically less than 1 Hz at 249 MHz; less than <3 Hz at 1001 MHz.SSB phase noise: Better than −124 dBc/Hz at 20 kHz offset from a 470 MHz carrier.Typically better than −121 dBc/Hz at 20 kHz offset from a 1 GHz carrier.RF leakage: Less than 0.5 μV at the carrier frequencies into a two-turn25 mm-diameter loop 25 mm from the surface of the signal generator.Modulation FM, AM or phase modulation can be applied to the carriers generatedby each signal source from independent internal or external modulationsources. The internal modulation sources are capable of generatingtwo simultaneous signals into any one of the modulation channels.Each internal and external modulation source can be simultaneouslyenabled to produce combined amplitude and frequency (or phase)modulation. Pulse modulation can be applied to each of the carriersfrom external pulse sources. The pulse modulation can be used incombination with the other forms of modulation. 2-level or 4-level FSKmodulation can be applied to each carrier using data from an externalsource.Frequency modulationDeviation range: 0 to 100 kHz.Resolution: 3 digits or 1 Hz.Accuracy: ±5% of set depth at 1 kHz modulation rate.Bandwidth (1 dB): DC to 100 kHz (DC coupled);10 Hz to 100 kHz (AC coupled);20 Hz to 100 kHz (AC coupled with ALC).Group delay: Less than 5 μs to 100 kHz.Carrier frequency offset: Less than 1% of the set frequency deviation when DC coupled.Distortion: Less than 1% at 1 kHz rate for deviations up to 100 kHz, typically ≤0.3%at 1 kHz rate for deviations up to 10 kHz.(For carrier frequencies below 50 MHz: less than 3% at 1 kHz rate anddeviations up to 100 kHz.)FSKModes: 2-level or 4-level FSK.Data source: External data via rear panel 25-way D-type connector.Frequency shift: Settable up to ±100 kHz. |
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