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R&S HZ-9
1 General
The R&S
and R&S
R&S
near-field measurements in situations where these instruments cannot be supplied directly
from a test receiver or when it is not possible to connect the instrument to the test receiver
(standalone operation). The R&S
applications.
The constant voltage source is designed as a low-noise linear regulator and is ideal for
EMI measurements in shielded rooms. The floating output voltages are each
connected to a contact in the 12-contact socket on the power supply's front panel. This
socket is the same type and has the same pin assignment as the sockets on the front
panels of the Rohde & Schwarz test receivers to allow direct connection of the active
instruments to the R&S
instruments to the R&S
cable is required (Rohde & Schwarz order number 1142.8207.00).
The R&S
0018.5362.00) which are provided to encode the measurement unit and the transducer
factor on the test receiver. Fig. 1 shows the pin assignment for this connector pair. This is a
top view of the socket in the power supply's front panel.
Fig. 1 Pin assignment for the 12-contact socket
For coding purposes, the inputs for the desired code are connected to pin A.
Example 1:
An antenna has an antenna factor von 30 dB, i.e. a field strength of 30 dB (µV/m)
produces a voltage of 0 dB (µV) at the RF input.
G Connect pins C, E and F to pin A.
The coding input "Sign reversal of factor" makes it possible to also incorporate
amplifiers into the coding.
Example 2:
An upstream amplifier has a constant gain of 10 dB. The input voltage for the amplifier
is to be displayed.
G Connect pins E and M to pin A.
Manual 1316.4969.02 - 01
®
HZ-9 power supply is a bipolar, constant voltage source for the R&S
®
HFH2-Z6 active antennas, the R&S
®
EZ-12 antenna impedance converter and the R&S
®
HZ-9 power supply. For direct connection of the active
®
ESPI, R&S
®
HZ-9 power supply includes three 12-pin plugs (Rohde & Schwarz order number
®
ESH2-Z2 active voltage probe, the
®
®
HZ-9 power supply can also be used in other
®
®
ESCI and R&S
ESU test receivers, an adapter
A
+/– 0 V
B
+10 V (max. 100 mA)
C
µV/m (electric field strength)
D
µA
E
10 dB
F
20 dB
G
40 dB
H
80 dB
J
µA/m (magnetic field strength)
K
–10 V (max. 100 mA)
M
Sign reversal of factor
®
HFH2-Z2
HZ-14 probe set for E and H
General
3
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