Agilent Technologies E4418B Service Manual page 63

17.Round off the DVM reading to two decimal places. Record this value as
V :
1
• V ___________
1
18.Turn the power reference off:
System
Press ,
Inputs
19.Disconnect the DVM negative input lead from the V
Agilent 432A. Reconnect it to the Agilent 432A chassis ground.
20.Observe the reading on the DVM. Record this value as V
• V ___________
comp
21.Calculate the power measured from the power reference oscillator
using equation 2-9:
Equation 2-9:
2.V
comp
P
= ----------------------------------------------------------------------------- -
1
Where:
22.Record the value P
• P ___________
1
23.Calculate the power measured with mount resistance set to 100Ω:
• Set the Agilent 432A mount resistance switch to 100Ω.
• Connect the equipment as shown in Figure 2-7 ensuring that the
DVM input leads are isolated from chassis ground.
• Repeat steps 15 to 20. Record the new values of V
V ___________
0
V ___________
1
V ___________
comp
24.Calculate the power measured from the power reference oscillator
using Equation 2-10 and record the value:
Equation 2-10
2.V
comp
P = ----------------------------------------------------------------------------- -
2
Where:
• P ___________
2
Agilent E4418B/E4419B Service Guide
Output Standing Wave Ratio (SWR) Test
,
More Power Ref Off
2 2
( )
V V V V
– + –
1 0 0 1
4.R
1
:
1
2 2
( )
V – V + V – V
1 0 0 1
4.R
2
Performance Tests
.
connector on the
RF
comp
, V and V
0 1
:
comp
2-27