Installation guide

Clock Connections Setting Up ParBERT 43G
Agilent 81250 ParBERT Installation Guide, February 2002 67
Using an External Clock Generator
For precision measurements, it is recommended to use an external
precision clock generator. The following example assumes that the DUT
needs also a 2.7 GHz clock.
Figure 45 External Clock Generator
The connection of the pulse generator to the DUT and from there to the
CLOCK/REF INPUT of the clock module helps to eliminate undesired
signal delays.
NOTE It is possible to connect the pulse generator also to the DEMUX module
in order to create a fully synchronized setup. In this case, a pulse delay
unit has to be inserted between the pulse generator and the DEMUX
module.
CDR
Divide
/
.
/
E8244A
16
Clock (675MHz
or 2.7GHz)
43.2G Error
Detector Bundle
17 Generators
16
1
593.75 .. 675 MHz
9.5 .. 10.8 GHz,
2.375 .. 2.7 GHz
593.75 .. 675 MHz
/
19 .. 21.6 GHz