6 Input/Output
6.2 Input
Parameters for VXT M9410A/11A/15A/16A and EXM when used with Radio
Heads/CIU
<port> Input
RRHhRFHDp
Head h, RF Tx/Rx p, for example RRH1RFHD2 = Head 1, RF Tx/Rx 2
IFINn
DUT IF IN for Channel n, for example IFIN1 = DUT IF IN for Channel 1
IFHDn
DUT IF In/Out for Channel n, for example IFHD1 = DUT IF In/Out for Channel 1
When using a Remote Radio Head (RRH), such as the Keysight M1740A mmWave
Transceiver for 5G, with the VXT or EXM, the choices in the dropdown are
dependent on which heads are installed. For example, in the case where two
M1740As are present, each with two ports, the dropdown will look like this:
Note the inclusion of the None choice, which allows the input port to become
unassigned, and thus allows any Output port to be assigned without concern about
an Input port conflict. When the input port is unassigned, an error appears in the
status area:
The user interface parameter RFHD p corresponds to the port labeled RF Tx/Rx p;
for example, RFHD 2 means the port labeled RF Tx/Rx 2 on the M1740A.
When using a E7770A Common Interface Unit, you may make connections to the
half-duplex port on the front of the CIU labeled DUT IF In/Out, and/or to ports on
the rear of the CIU labeled DUT IF IN and DUT IF OUT. For example, if your DUT has
an IF Output you will usually connect it to one of the DUT IF IN ports on the rear
panel of the CIU. The user interface parameter IFIN n corresponds to the DUT IF IN
port for Channel n on the CIU, so you would choose IFIN 1 in the dropdown to
Short Range Comms & IoT Mode User's &Programmer's Reference 2040
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