Rohde & Schwarz EX-IQ-BOX, Руководство пользователя

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Remote Control Commands
R&S
®
EX-IQ-BOX
329 User Manual 1409.5570.32 ─ 05
[:SOURce<hw>]:EBOX:CPRI:TEST:TX:SDI <Sdi>
Activates the SDI ( S ervice Access Point D efect I ndication) defect indicator. This function
intentionally provokes an SDI event, in order to examine whether the DUT evaluates it.
In realtime applications, the function detects whether an SAP (
S ervice A ccess P oint) is
defective or not working properly.
Note: The command applies to CPRI RE test mode. In this mode, the R&S EX-IQ-BOX
acts as a CPRI REC (master). As defined in the CPRI standard specification, the CPRI
REC provides the generation of Layer 1 messages. In this section, you can simulate some
events. Use this function to see how the DUT responds to these events.
Parameters:
<Sdi> 0 | 1
*RST:
0
Example: SOUR1:EBOX:CPRI:TEST:TX:SDI ON
activate transmitter SAP Defect Indication.
Manual operation: See "SDI" on page 169
9.4.9 CPRI TX/RX - Downlink/Uplink Subsystem
The
{TX|RX}
subsystem comprises the remote control commands related to the CPRI
Uplink and Downlink.
Depending on the CPRI test mode, the R&S EX-IQ-BOX works either as a transmitter
(TX) or receiver (RX), as shown in the following diagrams.
Terms used in the description and familiar synonyms
UL (Uplink)
: The UL defines the direction from a mobile device to a base station. A
synonym to UL is RL (Reverse Link).
DL (Downlink) : The DL defines the direction from the base station to the mobile device.
A synonym to DL is FL (Forward Link).
●
In CPRI RE test mode, the R&S EX-IQ-BOX works in the DL (downlink) as a trans-
mitter (TX) and in the UL (uplink) as a receiver (RX).
DUT
CPRI RE
EX-IQ-BOX
EXBOX
B85
Downlink
Uplink
RX
TX
Fig. 9-5: CPRI RE test - schematic representation
●
In CPRI REC test mode, the R&S EX-IQ-BOX works in the DL as a receiver (RX) and
in the UL as a transmitter (TX).
CPRI Remote Control Commands