Improving Level Performance
R&S
®
SMA100B
212User Manual 1178.3834.02 ─ 05
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Connection via R&S NRP-Z5 sensor hub
The R&S NRP-Z5 USB sensor hub (high-speed USB 2.0) can host up to 4 R&S
NRP sensors. It provides simultaneous internal and external triggering of all con-
nected sensors.
Requires additional cables, depending on the used output connector of the hub.
Choose one of the following:
– Short extension cable R&S NRP-Z2 for connection to the sensor connector.
This six-pole connection provides the external trigger capability.
– Standard USB cable (USB type A to USB type B) to any USB type A connector
of the R&S SMA100B. This connection does not support external triggering.
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Connection via USB hub with external power supply unit
Requires the following cables, depending on the used sensor type:
– R&S NRP-ZKU (USB interface cable) for R&S NRPxx power sensors
– R&S NRP-Z3 or R&S NRP-Z4 (USB adapter cables) for sensors of the R&S
NRP-Zxx family
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Connection via LAN for R&S NRPxxxSN/xxxTN/xxxAN power sensors
Using the Ethernet interface requires PoE (Power over Ethernet) to provide the
electrical power.
To establish the connection, you can use:
– A PoE Ethernet switch, e.g. R&S NRP-ZAP1 and an RJ-45 Ethernet cable.
– A PoE injector and an RJ-45 Ethernet cable.
For details, see the description R&S
®
NRP
®
Series Power Sensors Getting Started.
Detection and mapping
The R&S SMA100B automatically detects a connected R&S NRP power sensor and
indicates it in the "NRP Power Viewer" and "NRP Sensor Mapping" dialogs.
By default, detected sensors are indicated as follows:
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A sensor connected at the Sensor socket is assigned as "Sensor 1".
If no sensor is connected to this socket, channel 1 remains unassigned.
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Sensors 2 to 4 are assigned to the sensors at the USB connectors, according to
their sequence of connection.
You can change the default mapping in the NRP Sensor Mapping dialog.
On connection, the R&S SMA100B immediately starts the measurement of a detected
R&S NRP power sensor. If you perform an instrument preset ([Preset] key or *RST),
the R&S SMA100B stops the measurements. The connection and the mapping of the
power sensors remain, the measurements must be restarted.
7.4.2 NRP Sensor Mapping
The "NRP Sensor Mapping" lists all R&S NRP sensors detected by the instrument.
Using Power Sensors
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