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21 Calculate the output level of the 53147A/148A/149A's power reference
Keysight 53147A/148A/149A Assembly Level Service Guide
oscillator (P
) using the following formula:
rf
P
rf
Where:
P
rf
V
comp
V
1
V
0
R
Calibration Factor
2 V
( V
– V
) + V
comp
1
0
=
4R (Calibration Factor)
= Power reference oscillator output level
= previously recorded value
= previously recorded value
= previously recorded value
= previously recorded value
= value for thermistor mount at 50 MHz (traceable to NIST)
2
2
– V
0
1
Service
2
71
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Troubleshooting
