R3765/67G Series Network Analyzer Operation Manual
10.7 Noise Level
10-22
When R3765CG/67CG
• Measure the noise level of A input.
(a) [MEAS] {S12 TRANS REV}.
(b) Press [SYSTEM] → {SERVICE MENU} → {SERVICE MODE} →
{MAINTENANCE MEAS MENU} → {A} to display the noise level of A input.
(c) [AVG] → {SMOOTHING ON} → {SMOOTHING APERTURE} → [2] → [0] → [x1].
(d) [SYSTEM] → [SYSTEM] → {SERVICE MENU} → {SERVICE MODES}
→ {SOURCE PLL OFF}.
(e) Read the noise level value by the marker.
• Measure the noise level of B input.
(a) [MEAS] {S21 TRANS FWD}.
(b) Press [SYSTEM] → {SERVICE MENU} → {SERVICE MODE} →
{MAINTENANCE MEAS MENU} → {B} to display the noise level of B input.
(c) [AVG] → {SMOOTHING ON} → {SMOOTHING APERTURE} → [2] → [0] → [x1].
(d) [SYSTEM] → [SYSTEM] → {SERVICE MENU} → {SERVICE MODES}
→ {SOURCE PLL OFF}.
(e) Read the noise level value by the marker.
<Check> : Noise level (3kHz bandwidth)
300kHz to 40MHz : -73dB or less
40MHz to 3.8GHz : -78dB or less
3.8GHz to 8GHz : -68dB or less (R3767CG only)
For OPT 12
300kHz to 40MHz : -65dB or less
40MHz to 3.8GHz : -70dB or less
For OPT 11, OPT 13 or OPT 14
• Measure the noise level at Input A.
(a) [MEAS] → {S12 (P2 → P1)}
(b) [SYSTEM] → {SERVICE MENU} → {SERVICE MODE} → {MAINTENANCE
MEAS MENU} → {A}
(c) [AVG] → {SMOOTHING ON} → {SMOOTHING APERTURE} → [2] → [0] → [x1].
(d) [SYSTEM] → [SYSTEM] → {SERVICE MENU} → {SERVICE MODES}
→ {SOURCE PLL OFF}.
(e) Read the noise level indicated by the marker.
• Measure the noise level at Input B.
(a) [MEAS] → {S12 (P2 ← P1)}
(b) [SYSTEM] → {SERVICE MENU} → {SERVICE MODE} → {MAINTENANCE
MEAS MENU} → {B}
(c) [AVG] → {SMOOTHING ON} → {SMOOTHING APERTURE} → [2] → [0] → [x1].
(d) [SYSTEM] → [SYSTEM] → {SERVICE MENU} → {SERVICE MODES}
→ {SOURCE PLL OFF}.
(e) Read the noise level indicated by the marker.
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