DAZZLER
TM
system manual Part I : installation & operation 8.6
8.4.2 Input signal aux
In standard Dazzler configurations, aux is used for various synchronization schemes. This
signal is a level sampled at the trigger rate. It forces the selection of waveform A when B is
displayed in normal, alternate and wave cycling modes.
8.4.3 ExtClock
The Low Jitter hardware option brings a major change in the operation of the Dazzler RF unit:
the reference clock for the generator of the sampling clock
5
is fed from the oscillator train. This
allows to synchronize the complete system to exhibit jitters below 300ps.
8.5 Output signal RF out
RF out: this is the SMA terminal which provides RF power to the crystal module. It should
be properly connected to a 50 Ω load or to the crystal, failure to provide a load may damage
the RF generator.
The nominal output is 10 W, translating to 60 V peak-to-peak. This signal should not be
connected directly to an oscilloscope, but via a 40 dB power attenuator, otherwise the oscillo-
scope is likely to be permanently damaged. This point is very important, as many calibration
procedures imply to connect an oscilloscope on this signal. The power attenuator should be
capable of withstanding 20 W or more.
The frequency band depends upon the generator model. The table below shows the cutoff
frequencies in MHz. Cutoff is very sharp, as it is numerically generated.
model Fmin MHz Fmax MHz Fdata MHz
HR800 71.7 103.8 45.0
HR1053 57.6 70.9 33.0
LN-1030 305.7 326.3
LN-1500 160.1 243.8
LN-1700-2700 106.1 181.3 96.0
UWB-650-1100 36.8 66.8 46.0
WB800 43.7 62.2 27.5
Table 8.1: Typical frequency bands
5
its multiple and sub-multiple
V3.00 - 8
th
April 2019 (ContentsTable) (FiguresTable) 81/94
To Next Page
Loading...
Need help?
General