Instrument Function
R&S
®
SMBV100A
403
Operating Manual 1176.8016.02 ─ 17
"External"
The external clock reference is fed in as the symbol clock via the REF
IN connector.
While working in master-slave synchronous mode, an external clock
source has to be selected for the slave-instrument(s) and the CLOCK
IN connector has to be connecter to the CLOCK OUT connector of
the master instrument.
This allows the slave instrument(s) to synchronies its clock to the sys-
tem clock of the master instrument.
The symbol rate must be correctly set to an accuracy of +/-2 % (see
data sheet).
The polarity of the clock input can be changed with the aid of "Global
Trigger/Clock Settings".
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CLOCk:SOURce
Clock Mode
Enters the type of externally supplied clock.
"Sample"
A sample clock is supplied via the CLOCK connector.
"Multiple Sam-
ple"
A multiple of the sample clock is supplied via the CLOCK connector;
the sample clock is derived internally from this.
The "Multiplier" window provided allows the multiplication factor to be
entered.
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CLOCk:MODE
Sample Clock Multiplier
Enters the multiplication factor for clock type "Multiple".
Remote command:
[:SOURce<hw>]:BB:ARBitrary:CLOCk:MULTiplier
Measured External Clock
Provided for permanent monitoring of the enabled and externally supplied clock signal.
Remote command:
CLOCk:INPut:FREQuency?
Global Settings
The buttons in this section lead to submenu for general trigger, clock and mapping set-
tings.
Global Trigger/Clock Settings
Calls the "Global Trigger/Clock/Input Settings" dialog.
This dialog is used among other things for setting the trigger threshold, the input impe-
dance and the polarity of the clock and trigger inputs.
The parameters in this menu affect all digital modulations and standards, and are
described in
Chapter 5.2.3.13, "Global Trigger/Clock/External Input Settings"
Baseband Signal - Baseband Block
