Noise And Spurious Signal Level; Noise And Spurious Signal Level Test Setup - HP 3562A Service Manual

OD E L 3562A
If the Ya marker read ing is less than or equal to - 80 dBVrms, check PASS on the
Performance Test Record for measurement two, channel 1 with the BNC center
conductor grou nded.
3. If the Yb marker read ing is less than or eq ual to - 80 dBVrms, check PASS on the
Performance Test Record for measurement two, channel 2 with the BNC center
conductor grou nded.
Adjustments
If Test Fails Check:
Section I I I
Troubleshooting
Section V I I
This test measures the level of the noise floor and any spu rious signals generated within
2-3 3 NOISE AND SPURIOUS S IGNAL LEVEL
the HP 3S62A.
When the i nput is term inated with a
Specification
be at least 80 d B below the range setting. When using a flat top wi ndow and a
the average noise level must be less than:
20 Hz to 1 kHz
1 kHz to 1 00 kHz
(2) feedthrough terminations
Requ i red Test Equipment
son
Figure 2-2 5 Noise and Spurious Signal Level Test Setup
2nd Pass Gain Adj ustment
ADC Offset and Reference Adjustment
A33, A3S I nput Boards
A32, A34 Analog Digital Converter Boards
load, the ampl itude of all spurious signals must
son
Freq uency Noise Level
- 1 34 d BV/�
- 1 44 d BV/YHZ
D
@
°
0 000 000
HP 1 1 0 4 8
FEEDTHROUGH TERM I NA T I ONS
A L L I G A T O R C L I P CABLES
HP 1 1 048C
�
8
BB§
[gJ
000
BBoG
DDD
gg
ggg
0 0 0
]t
50 OHM
PE RFORMANCE T ESTS
load,
son
2-73