R&S ZVA8 - Page 418

Repairs R&S ZVA
1177.5333.02 3.110 E-11
Testing the Reflectometer RM44 and RM50
Generator levels
It is assumed that the synthesizer section (synthesizer1) associated with the reflectometer to be tested
is OK.
 Loosen cable W514A (GEN -> coupler unit) or W512 (GEN -> attenuator) at both ends and screw
off at the generator output GEN.
 Connect the generator output to the spectrum analyzer using the K-cable (ZVA40) or V-cable
(ZVA50).
 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
3rd harmonic
10 MHz
10 dBm
9 dBm
12.0 dBm
---
---
50 MHz
10 dBm
9 dBm
12.0 dBm
< - 21 dBc
< - 21 dBc
1 GHz
10 dBm
9 dBm
12.0 dBm
< - 21 dBc
< - 21 dBc
4 GHz
10 dBm
9 dBm
12.0 dBm
< - 21 dBc
< - 21 dBc
8 GHz
10 dBm
9 dBm
12.0 dBm
< - 21 dBc
< - 21 dBc
10 GHz
10 dBm
9 dBm
14.0 dBm
< - 21 dBc
< - 21 dBc
13 GHz
10 dBm
9 dBm
14.0 dBm
< - 21 dBc
< - 21 dBc
15 GHz
10 dBm
8 dBm
14.0 dBm
< - 21 dBc
< - 21 dBc
18 GHz
10 dBm
8 dBm
14.0 dBm
< - 21 dBc
< - 21 dBc
20 GHz
10 dBm
8 dBm
14.0 dBm
< - 21 dBc
---
24 GHz
10 dBm
8 dBm
14.5 dBm
< - 21 dBc
---
28 GHz
10 dBm
7 dBm
14.5 dBm
< - 21 dBc
---
32 GHz
10 dBm
7 dBm
14.5 dBm
---
---
36 GHz
6 dBm
3 dBm
10.5 dBm
---
---
40 GHz
6 dBm
3 dBm
10.5 dBm
---
---
45 GHz (ZVA50 only)
6 dBm
3 dBm
10.5 dBm
---
---
50 GHz (ZVA50 only)
6 dBm
3 dBm
10.5 dBm
---
---
With the stated levels, the cable loss must still be taken into account.
Receiver levels
The following is assumed:
 The LO synthesizer section (synthesizer1 mod. 20, synthesizer2) 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.