Protocol Settings
R&S
®
EX-IQ-BOX
196
User Manual 1409.5570.32 ─ 05
Fig. 7-74: CPRI Slow C&M internal connections
The "Terminal" sink periodically polls the internal receive buffer for new frames. When a
high bit rate HDLC signal is received over the CPRI link, not every new frame will be
captured and displayed.
On the transmitter side, only single commands can be send using the "Terminal" window.
The RS232 connection however acts as a
Real Time
interface in its speed limits. Every
received HDLC frame will be output via RS232 using the specified speed. If the received
signal has a higher bit rate than the RS232 interface, frames will be lost.
On the transmitter side the RS232 speed will always be slower than the CPRI slow C&M
bit rate so all frames will be transmitted.
"Direct"
The R&S
EX-IQ-BOX transmits the data directly to the DUT, that means
without internal encoding or decoding.
"HDLC EN/DE Coding"
The R&S
EX-IQ-BOX either encodes the plain text data before trans-
mission to the DUT, or it decodes and then displays the incoming data.
Note:
This mode applies to HDLC source "Terminal".
Remote command:
HDLC Active
The blue LED indicates that the interface is active, red accordingly shows that it is inac-
tive.
Remote command:
Frames Sent
Indicates the number of sent HDLC frames.
Remote command:
CPRI
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