R&S ZVAX-TRM, Руководство пользователя

Страница: 22 / 32

Preparing the Extension Unit for Use
R&S
®
ZVAX-TRM
22 User Manual 1325.1268.02 ─ 04
RF cabling
The semirigid RF cables delivered with the R&S ZVAX-TRM are tailored for stacked
benchtop operation. For rack mounting, with the extension unit directly underneath the
R&S
ZVA, a different cable set is available and has to be ordered separately (options
R&S ZZA
‑
ZVAX).
Risk of instrument damage in a rack
An insufficient airflow can cause the instrument to overheat, which may disturb the
operation and even cause damage.
Make sure that all fan openings are unobstructed, that the airflow perforations are
unimpeded, and that the minimum distance from the wall is 10 cm.
3.4.5 Connecting the extension unit to the R&S ZVA/ZVT
After positioning (and mechanical fixation) of NWA and extension unit, the units have
to be interconnected.
1. USB Connection
Use the "USB type A to USB type B" cable delivered with the R&S ZVAX-TRM to
connect a USB type A port of the NWA to the USB FROM NWA port of the exten-
sion unit
2. RF Connections
Connect the SOURCE/REF/MEAS OUT connectors in the upper part of the front
panel of the extension unit to the corresponding IN direct access connectors of the
NWA, and vice versa (see Figure 1-1 ).
The available connectors depend on the port number and the equipped options.
3. Pulse Modulator Control
If the pulse generator of the R&S ZVA/ZVT (with option R&S ZVA-K27) shall be
used, connect the CASCADE OUT connector of the NWA to the CASCADE IN con-
nector of the extension unit; the required RJ45 cable is delivered with the extension
unit.
If an external pulse generator shall be used, connect it to the EXT PULSE
GENERATOR IN connectors of the extension unit.
Putting the Extension Unit into Operation