Table of Contents
Advertisement
How to Set Up a Port Or Channel for Signals To Be Analyzed
Name
ECL (to -2V)
ECL (to GND)
PECL (to +3V)
TTL (to GND)
CMOS 5V (to HiZ)
CMOS 3.3V (to HiZ)
HP 81200 Data Generator/Analyzer Platform User Guide, Revision 2.1
How to Set Additional Analyzer Parameters
1 Click the second tab of the analyzer parameter window.
Figure 51
Additional Parameters for a Data Analyzer Connection
2 Decide on the additional options. The additional options are:
– Predefined Levels: Use the levels shown and entered in the window
(custom) or choose one of the predefined levels.
The predefined levels for an analyzer are listed in the table below:
Table 4
Predefined Analyzer Signal Levels
Threshold
-1.3 V
-1.3 V
3.7 V
1.5 V
2.5 V
1.6 V
– If you are using your own custom setting:
Standard input Impedance of an analyzer frontend is 50 τ . See
specifications.
External impedance is usually the output impedance of the DUT.
The minimal Termination Voltage for a terminal that is not connected
to ground is –2 V.
Termination
Internal
Voltage
Impedance
50 τ
-2.0 V
50 τ
0.0 V
50 τ
3.0 V
50 τ
0.0 V
HiZ
HiZ
Setting Up Ports and Channels
E4837A E4844A E4845A E4847A
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
121
Advertisement
Table of Contents
