Rohde & Schwarz CMW500 - Page 308

Annexes
R&S
®
CMW500
292User Manual 1173.9463.02 ─ 06
7.1.1.7 REF IN, REF OUT 1
BNC connectors used as input and output connectors for the external or internal refer-
ence signals; see Sync Settings.
The function of the connectors depends on the "Frequency Source" setting in the "Sync"
section of the setup dialog:
●
If the "Internal" reference frequency is active, REF OUT 1 is used as an output con-
nector for the 10 MHz internal reference clock signal of the R&S CMW500.
●
If the "External" reference frequency is active, REF IN is used as an input connector
for an external reference clock signal. The R&S CMW500 is synchronized to the
external reference signal. The external reference signal is also routed to the output
connector REF OUT 1.
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.
7.1.1.8 SYS SYNC OUT 1 to 3, SYS SYNC IN
BNC connectors used as input and output connectors for the system synchronization
signal; see Sync Settings. 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.
Interfaces and Connectors