SECTION 1 GENERAL
1-16
Model MS2668C
Frequency range 9kHz to 40.0GHz
band frequency range harmonic order of the mixer (n)
0 0 to 3.2GHz 1
1– 3.1 to 5.7GHz 1
Frequency band 1+ (n=1) 5.5 to 8.1GHz 1
1+ (n=2) 8.0 to 14.3GHz 2
2– (n=4) 14.1 to 26.5GHz 4
3– (n=6) 26.2 to 40.0GHz 6
Frequency setting resolution (1×N) Hz
Pre-selector range 3.1GHz to 40.0GHz (band1–, 1+, 2– , 3–)
Frequency readout accuracy ± (frequency readout × reference frequency accuracy + span × span accuracy)
*Span: ≥ 10kHz × n, after calibration
Marker frequency readout accuracy Normal: Same as frequency readout accuracy, Delta: Same as frequency span accuracy
Frequency counter Resolutions:1Hz, 10Hz, 100Hz, 1kHz
Accuracy: Frequency readout × reference frequency accuracy ± 1LSD (when S/N is 20dB)
Frequency span Setting range: 0Hz, 1kHz to 40.1GHz
Accuracy: ±5%
Resolution bandwidth (RBW)
Setting range:1kHz, 3kHz, 10kHz, 30kHz, 100kHz, 300kHz, 1MHz, 3MHz (manually or automatically
(3dB BW)
settable according to frequency span)
*Option02: 30Hz, 100Hz, 300Hz are added.
Option03: 10Hz, 30Hz, 100Hz, 300Hz are added.
Measurements of such as noise ,C/N, adjacent channel leakage power by measure function are executed with
the calculated equivalent noise band width of the resolution band width.
Accuracy: (20% (RBW= 1kHz to 1MHz), (30% (RBW=3MHz)
Selectivity (60dB: 3dB): ≤ 15:1
Video bandwidth (VBW) 1Hz to 3MHz (1–3 sequence), off *manually or automatically settable according to resolution bandwidth
Signal purity and stability
Noise sidebands: ≤–95dBc/Hz + 20Log N (1MHz to 40.0GHz, 10kHz offset)
Residual FM: ≤ 20Hzp-p/0.1s (1GHz, span=0Hz)
Frequency drift: ≤200Hz ( N/min (span ≤10kHz × n, sweep time ≤100s)
*After 1-hour warm-up at constant ambient temperature
Reference oscillator
Frequency:10 MHz
Aging rate: ≤1×10
–7
/year, ≤2×10
–8
/day
Temperature characteristics: ≤5×10
–8
(0 to 50C˚)
*Reference frequency at 25C˚
Measurement range: Average noise level to +30dBm
Maximum input level: +30dBm (CW average power, RF ATT : ≥10dB), ±DC 0 V
Level measurement
Average noise level:
≤–115dBm (1MHz to 1GHz, band 0), ≤–115dBm + 1.5 f[GHz] dB (1 to 3.1GHz, band 0)
≤–114dBm (3.1 to 8.1GHz, band 1–,1+(n=1)), ≤–113dBm (8.0 to 14.3GHz, band 1+(n=2))
≤–105dBm (14.1 to 26.5GHz, band 2–), ≤–101dBm (26.2 to 40.0GHz, band 3–)
*Resolution bandwidth: 1kHz,video bandwidth: 1 Hz,input attenuator:0dB
Residual response: ≤–90dBm (RF ATT: 0dB, input: 50Ω termination, 1 MHz to 8.1GHz)
Setting range
Log scale:–100 to +30dBm, or equivalent level, Linear scale:224µV to 7.07V
Unit
Log scale: dBm,dBµV,dBmV,dBµV (e.m.f), W, Linear scale: V
Reference level accuracy:
±0.4dB (–49.9dBm to 0dBm), ±0.75dB (–69.9 to –50dBm, 0.1 to +30dBm),
±1.5dB (–80 to -70dBm)
*After calibration at 100MHz frequency, span 1MHz
Reference level (when RF ATT, RBW, VBW and sweep time set to AUTO)
RBW switching uncertainty:
±0.3dB (1kHz to 1MHz), ±0.4dB (1kHz to 3MHz)
*After calibration ,referenced to RBW 3kHz
Input attenuator (RF ATT)
Setting range: 0 to 70dB (10dB steps)
*Manual settable or ,automatically settable according to reference level
Accuracy: ±0.3dB (0 to 50dB), ±1 dB (0 to 70dB)
*After calibration , referenced to frequecy 100MHz ,input attenuator 10dB
Amplitude Frequency
(Continued)
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