R&S ZNB Series User Manual page 258

®
R&S ZNB/ZNBT
Mounting the internal unit (1st generation R&S ZNB only)
The internal version R&S ZN-B15 of the RFFE-GPIO extension board uses the same
slot as the bias tees (see
bias tees are installed, you have to remove them first.
Risk of board and instrument damage
Please turn off the R&S ZNB before mounting an internal RFFE-GPIO extension
board R&S ZN-B15. A hot plug installation is not supported and can damage board
and instrument.
Current and voltage measurements (variants 03 only)
For test purposes, variants 03 of the R&S ZN-B15/-Z15 can apply constant, pin-spe-
cific output voltages not only to the GPIO pins but also to the individual RFFE pins.
Furthermore it can measure the (resulting) voltages/currents at these pins using suita-
ble shunt resistances. The firmware takes 500 samples per millisecond (and pin) and
calculates the average voltages/currents over the configured measurement time.
RFFE Cable with adapters (R&S ZN-Z25)
A 2m ribbon cable for connecting a DUT to the RFFE GPIO interface – along with a set
of adapters – is shipped with each RFFE GPIO extension board. It splits the 25-pin
connector of the RFFE GPIO interface to four 10-pin socket connectors. The adapters
provide several different pin configurations.
This interface cable/adaptor kit can also be ordered separately from Rohde & Schwarz
(R&S ZN-Z25, order no. 1334.3424.02). For a detailed pin description, see the
R&S ZN-Z25 data sheet.
4.7.20 Additional removable system drive
Option R&S ZNB-B19 / R&S ZNBT-B19
Option R&S ZNB/ZNBT-B19 provides an additional removable system drive for the
R&S ZNB/ZNBT, including operating system and VNA firmware.
See the data sheet for the available variants of this option.
4.7.21 Extended power range
Various "B2x" Options (see table below)
The "Extended Power Range" options reduce the minimum source power for the
R&S ZNB/ZNBT:
User Manual 1173.9163.02 ─ 62
Chapter 4.7.13, "Bias tees (R&S ZNB
Concepts and features
Optional extensions and accessories
only)", on page 254). If
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