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SPECTRUMANALYZERS

Name MS2681AMS2683AMS2687B EMCEN61326: 1997/A2: 2001 (Class A), EN61000-3-2: 2000 (Class A), EN61326: 1997/A2: 2001 (Annex A) LVDEN61010-1: 2001 (Pollution Degree 2)

MS2687B Mainframe specifications when external mixer is used.

Frequency range: 18 to 110 GHzFrequency band: Frequency Band Frequency range Mixer harmonics order [N] K 18 to 26.5 GHz 4Ka 26.5 to 40 GHz 6Q 33 to 55 GHz 8 U 40 to 60 GHz 9 or 10V 50 to 75 GHz 11 or 12E 60 to 90 GHz 13 or 14 W 75 to 110 GHz 16 Span setting range0 Hz, (100 x N) Hz to each bandwidthMixer transform loss 15 to 85 dB setting range Maximum input levelDepend of external mixer
AmplitudeInput/OutputExternal Mixer Average noise levelDepend of external mixer Frequency responseDepend of external mixer Adaptive mixerOnly 2 port mixer Local frequency4 to 7 GHz IF frequency460.69 or 466 MHzDisplay gain0 ±2 dB (External mixer input level –10 dBm, Mixer transform loss 15 dB)

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MS2681A OptionsOption 01: Precision frequency reference oscillator

Frequency10 MHz Start-up characteristics ≤ 5 x 10
–8 ( ≤ 7 minutes, +25ËšC, Typical value) Aging rate ≤ ±5 x 10
–10 /day (With the frequency at 24 hours after the power is turned on referenced)Temperature characteristics ≤ ±5 x 10
–10 (With the frequency at 0 to +50ËšC and +25ËšC referenced)

Option 02: Narrow resolution bandwidths (FFT)

Setting range: 1 Hz to 1 kHz (1, 3 sequence)Resolution bandwidthBandwidth accuracy: ±10% (RBW = 30, 300 Hz), ±10% Typical (RBW = 1, 3, 10, 100, 1 kHz)RBW selectivity (60 dB: 3 dB): ≤ 5:1 RBW switching uncertainty: ±0.5 dB Span settingMinimum setting span: 100 HzWhen RBW is 1 Hz and RF ATT is 0 dB[Without Option 08]Average noise level display ≤ –148.3 dBm + f [GHz] dB Typical (1 MHz to 2.5 GHz), ≤ –146.3 dBm + f [GHz] dB Typical (2.5 to 3.0 GHz)[With Option 08] ≤ –146.3 dBm + 1.5f [GHz] dB Typical (1 MHz to 2.5 GHz), ≤ –144.3 dBm + 1.5f [GHz] dB Typical (2.5 to 3.0 GHz)

Option 04: Digital resolution bandwidth

Setting range: 10 Hz to 1 MHz (1, 3 sequence)Bandwidth accuracy: ±10% (RBW: ≥ 100 Hz), ±10% NOMINAL (RBW: ≤ 30 Hz)Resolution bandwidthBandwidth selectivity (60 dB: 3 dB): ≤ 5:1 (RBW ≥ 100 Hz), ≤ 5:1 NOMINAL (RBW: ≤ 30 Hz) RBW switching uncertainty: 0.5 dB Span settingMinimum span setting: 1 kHzDetection modeNORMAL, POSITIVE PEAK, NEGATIVE PEAK, SAMPLE, RMS RMS: displays root-mean-square value of average power between sample points When RBW is 10 Hz and RF ATT is 0 dB[Without Option 08]:Average noise level ≤ –136.5 dBm + f [GHz] dB NOMINAL (1 MHz to 2.5 GHz), ≤ –132.5 dBm + f [GHz] dB NOMINAL (2.5 to 3.0 GHz)[With Option 08]: ≤ –134.5 dBm + 1.5 x f [GHz] dB Typical (1 MHz to 2.5 GHz), ≤ –130.5 dBm + 1.5 x f [GHz] dB Typical (2.5 to 3.0 GHz)

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