R&S AFQ100A Operating Manual page 144

R&S AFQ100A
Measured External
Clock - Memory Clock
Threshold and impedance of the external clock signal are entered in the Input Line Setup (CLKIN /
TRIG / NEXT) section. This section is indicated only when clock source External is selected.
Threshold - Input Line
Setup
Impedance - Input Line
Setup
The reference clock source can be selected in the Reference Clock (10 MHz) section. In addition,
synchronization of several R&S AFQs is enabled and configured.
1401.3084.32
(Clock source external only)
Indicates the measured frequency of the external clock signal. Thus, a
screening of the external clock is possible. The measured frequency is
indicated only when the clock source External is selected.
Remote-control command:
CLOC:INP:FREQ?
(Clock source external only)
Sets the high/low threshold for the three inputs CLOCK IN, TRIG and
NEXT (segment trigger). The threshold can be set only if the trigger
source external is selected.
Remote-control command:
SOUR:INP:CONT:THR
(Clock source external only)
Sets the impedance for the three inputs CLOCK IN, TRIG and NEXT
(segment trigger). The lower value, 50 Ohm, is recommended for high
clock frequencies or signals with high slew rates. The impedance can
be set only when the clock source External is selected.
Remote-control command:
SOUR:INP:CONT:IMP
4.33
Baseband Block
E-3