R&S ZVA8 - Page 406

Repairs R&S ZVA
1177.5333.02 3.98 E-11
Synthesizer-DS 1305.5539.xx
Source 1 to 4 (set port1 to 4 active)
Frequency
(ZVA setting)
Source Level
2nd harmonic
3rd harmonic
300 kHz
+3 dBm to -5 dBm
< -27 dBc
< -30 dBc
100 MHz
+3 dBm to -5 dBm
< -27 dBc
< -30 dBc
1 GHz
+3 dBm to -5 dBm
< -27 dBc
< -30 dBc
2 GHz
+3 dBm to -5 dBm
< -27 dBc
< -30 dBc
3 GHz
+3 dBm to -5 dBm
< -20 dBc
< -30 dBc
4 GHz
+3 dBm to -5 dBm
< -20 dBc
< -30 dBc
6 GHz
+3 dBm to -7 dBm
< -27 dBc
< -30 dBc
8 GHz
+3 dBm to -7 dBm
< -27 dBc
< -30 dBc
Isolation of source switch1 to 4
ZVA frequency 8 GHz
Port no.
Port setting
Source output
Isolation
1
Port1 inactive
Port2 active
X165
X166
-90 dBc ±5 dB
2
Port1 active
Port2 inactive
X165
X166
-90 dBc ±5 dB
3
Port3 inactive
Port4 active
X168
X169
-90 dBc ±5 dB
4
Port3 active
Port4 inactive
X168
X169
-90 dBc ±5 dB
The cable loss must also be taken into account at the stated levels. For the specified cable it is
0.25 dB/GHz (0.5 m) 0.5 dB/GHz (1 m).
The board must be replaced if the level is more than 2 dB below the specified value or the other values
are more than 2 dB above their specified value.