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Annexes
R&S
®
CMW500
269
User Manual 1173.9463.02 ─ 02
The external reference signal must meet the specifications of the data sheet.
REF OUT1, RF1 COM, RF2 COM, RF1 OUT, RF3 COM, RF4 COM, RF3 OUT
Use double-shielded cables and match signal with 50 Ω in order to comply with EMC
(electromagnetic compatibility) directives.
8.1.1.8
SYS SYNC OUT 1 to 3, SYS SYNC IN
BNC connectors used as input and output connectors for the system synchronization
signal; see
. The connectors are optional and only present if a "Multibox
Flexible Link Sample Bus Board with external SysSync Support" (option R&S CMW-
S550M) is equipped.
The function of the connectors depends on the "SYS SYNC" setting in the "Sync" section
of the setup dialog:
●
Standalone: The connectors are not used.
●
Generator: The instrument provides a system synchronization signal at all SYS SYNC
OUT connectors.
One SYS SYNC OUT connector must be connected to the SYS SYNC IN connector.
The other SYS SYNC OUT connectors can be connected to the SYS SYNC IN con-
nector of other instruments.
●
Listener: SYS SYNC IN is used as input connector for a time synchronization signal
generated by another R&S CMW.
Only use the cables labled SYS SYNC which are included in the delivery.
8.1.1.9
TRIG A, TRIG B
BNC connectors for trigger input or output signals; see
Input signal:
An external trigger input signal must be a LVTTL/LVCMOS (3.3 V) signal
with a rise/fall time below 5 ns. The trigger input is high impedance.
Output signal:
The CMW trigger output has a LVTTL/LVCMOS (3.3 V) signal. The output
impedance is approximately 50 Ohm.
Trigger cables
Be aware that long trigger cables may cause signal reflections!
8.1.1.10
DVI
DVI-D Dual-link connector for external monitor connection; see
Interfaces and Connectors