R3765/67G Series Network Analyzer Operation Manual
10.7 Noise Level
10-21
10.7 Noise Level
Testing procedure
Set the R3765/67G series as follows.
(a) [SCALE]
{/DIV}
[1]
[0]
[x1].
•
For R3765AG/67AG, see step
.
•
For R3765BG/67BG, see step
.
•
For R3765CG/67CG, see step
.
•
For OPT11/OPT14, see step
(b) [AVG]
[3]
[kHz].
CAUTION!
1. The phase lock of the signal source is set to OFF by this operation, so that the
receiver section is not affected by the leakage from the signal source, by which only
the noise level in the receiver section can be measured.
2. The input port must not be connected with anything.
When R3765AG/67AG
•
Measure the noise level of A input and B input according to the following
procedure.
(a) Press [MEAS] & {A} to display the noise level of A input.
(b) [AVG]
→
{SMOOTHING ON}
→
{SMOOTHING APERTURE}
→
[2]
→
[0]
→
[x1].
(c) [SYSTEM]
→
{SERVICE MENU}
→
{SERVICE MODES}
→
{SOURCE PLL OFF}.
(d) Read the noise level value by the marker.
(e) Press [MEAS] & {B} to display the noise level of B input.
(f)
[AVG]
→
{SMOOTHING ON}
→
{SMOOTHING APERTURE}
→
[2]
→
[0]
→
[x1].
(g) [SYSTEM]
→
{SERVICE MENU}
→
{SERVICE MODES}
→
{SOURCE PLL OFF}.
(h) Read the noise level value by the marker.
<Check> : Noise level (3kHz bandwidth)
300kHz to 40MHz : -85dB or less
40MHz to 3.8GHz : -90dB or less
3.8GHz to 8.0GHz : -80dB or less (R3767AG only)
When R3765BG/67BG
(a) Press [SYSTEM]
→
{SERVICE MENU}
→
{SERVICE MODE}
→
{MAINTENANCE MEAS MENU}
→
{B} to display the noise level of B input.
(b) [AVG]
→
{SMOOTHING ON}
→
{SMOOTHING APERTURE}
→
[2]
→
[0]
→
[x1].
(c) [SYSTEM]
→
[SYSTEM]
→
{SERVICE MENU}
→
{SERVICE MODE}
→
{SOURCE PLL OFF}.
(d) Read the noise level value by the marker.
<Check> : Noise level (3kHz bandwidth)
300kHz to 40MHz : -79dB or less
40MHz to 3.8GHz : -84dB or less
3.8GHz to 8GHz
: -74dB or less (R3767BG only)
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