Agilent Technologies 346A Operating And Service Manual page 25

Operator's Check with Agilent/HP 8970B Noise Figure Meter (Check 2a)
Step 1. Remove any cables from the noise figure meter input. Press
Step 2. Connect the equipment as shown in Figure 1-6.
Figure 1-6
Step 3. Enter a tuned frequency of 100 MHz. (See "Fixed Frequency Tuning" in
Step 4. Enter special function 5.3 to enable the instrument for spot ENR entry.
Step 5. Enter the ENR at 100 MHz from the noise source calibration label. (See
Step 6. Confirm that the noise source is operating correctly.
Step 7. Press
General Information
Operation
After 5 seconds, verify the noise figure display shows --FdB and the left
display shows 30 MHz.
Operator's Check Test Setup 2a
the Agilent/HP 8970B Operating Manual).
(See "Special Functions" in the Agilent/HP 8970B Operating Manual).
"Spot ENR, T , and T
hot
The noise figure measurement of the noise figure meter will appear in
the noise figure display. If the result of the measurement is less than 7.4
FdB, the noise source is operating.
to return the instrument to preset conditions.
PRESET
18
, in the Agilent/HP 8970B Operating Manual).
Cold
.
PRESET
Chapter 1