R&S ZVA8 - Page 423

R&S ZVA Repairs
1177.5333.02 3.115 E-11
Testing the Reflectometer RM67
Generator levels
It is assumed that the synthesizer section (synthesizer1) associated with the reflectometer to be tested
is OK.
 Loosen cable W514A (GEN -> BIAS 67) or W512A (GEN -> attenuator) at both ends and screw off
at the generator output GEN.
 Connect the generator output to the spectrum analyzer using the V-cable (if FSU50 or FSU67 is not
available use a power meter for level measurements).
 Set the ZVA to the CW sweep mode.
 Set the frequencies listed in the table.
 Set the power listed in the table.
Frequency
Set power to
(without GenAtt)
Set power to
(with GenAtt)
Level on GEN output
2nd harmonic
10 MHz
10 dBm
9 dBm
13.0 dBm
< - 30 dBm
500 MHz
13 dBm
12 dBm
16.0 dBm
< - 30 dBc
4 GHz
13 dBm
12 dBm
16.4 dBm
< - 30 dBc
8 GHz
13 dBm
12 dBm
16.7 dBm
< - 30 dBc
12 GHz
13 dBm
12 dBm
17.1 dBm
< - 25 dBc
16 GHz
13 dBm
11 dBm
17.4 dBm
< - 25 dBc
20 GHz
13 dBm
11 dBm
17.8 dBm
< - 25 dBc
24 GHz
10 dBm
6 dBm
15.2 dBm
---
28 GHz
10 dBm
7 dBm
15.5 dBm
---
32 GHz
10 dBm
7 dBm
15.9 dBm
---
36 GHz
6 dBm
3 dBm
12.3 dBm
---
40 GHz
6 dBm
3 dBm
12.6 dBm
---
45 GHz
6 dBm
3 dBm
13.1 dBm
---
50 GHz
6 dBm
3 dBm
13.5 dBm
---
55 GHz
2 dBm
- 1 dBm
10.0 dBm
---
60 GHz
2 dBm
- 1 dBm
10.4 dBm
---
67 GHz
2 dBm
- 1 dBm
11.1 dBm
---
With the stated levels, the cable loss must still be taken into account.
Receiver levels
The following is assumed:
 The LO synthesizer section associated with the reflectometer to be tested is OK.
 The network controller associated with the reflectometer to be tested is OK.
 One reflectometer in the instrument is functioning.
 Loosen the cable to the receiver input MEAS (X6) and the cable to the receiver input REF (X5) at
both ends and screw off at the receiver inputs.