Interfaces and Connectors
R&S
®
DVMS4
17
Getting Started 2113.7625.02 ─ 10
forming to the DVB
‑
ASI (EN 50083
‑
9 (2002)) interface standard. The output can be
used as a loop output for any transport stream input signal available.
To select the input or output, in the toolbar, click "Instrument Configuration" and then
select "Signal Interface". See the user manual or help system.
3.2.4.2
AF OUT (Headphones)
The jack socket for the L/R analog audio output provides the decoded audio stream of
the VLC software decoder as a stereo signal.
The socket is intended for connecting headphones or an active loudspeaker.
3.2.4.3
10 MHz REF IN
This BNC jack is used as input for the 10
MHz reference frequency. The reference fre-
quency input of the R&S
DVMS is used for high accuracy measurements such as RF
frequency offset, TS bit rate or PCR drift/offset. To activate this input, use the "Setup"
menu.
For details, refer to the user manual or help system.
3.2.4.4
1 PPS REF IN
This BNC jack is used as input for the 1PPS (1 pulse per second) reference pulse. The
1PPS reference pulse input of the R&S
DVMS is used for measuring the network delay
in DVB
‑
T distribution networks. Use a signal derived from an external GPS receiver
that provides short pulses at exactly 1
second distance. This input is activated, if one of
the SFN synchronization monitoring subparameters "SFN Sync Network Delay" is acti-
vated.
For details, refer to the user manual or help system.
3.2.5
DVB-T/H Receiver Module (R&S
DVMS-B53)
The DVB
‑
T/H receiver module is optional (R&S
DVMS
‑
B53).
Figure 3-4: DVB-T/H receiver module
The status of the connectors is indicated by LEDs. Before showing a new state, each
LED holds the current state for at least one second, if the current state is not "off" or
"flashing".
Rear Panel
