R3765/67G Series Network Analyzer Operation Manual
1.6 System Setup Cautions
1-9
1.6
System Setup Cautions
1.6.1
Notes on the use of Parallel I/O Ports
(1)
In +5V power output from parallel I/O port, maximum current capacity is 100mA.
Use it within 100mA.
(2)
An overcurrent protective device is installed in the +5 V power supply, which supplies
power through the parallel I/O port. If an overcurrent flow of more than 100 mA occurs, the
power supply shuts down.
When the problem causing the overcurrent is solved, the power supply is automatically
resumed.
(3)
Use the shield cable for the cable for parallel I/O port. (To prevent malfunction by noise)
(4)
The standard of the cable for the radiation test of the R3765/67G series is MO-27.
(5)
Do not bundle I/O cable and AC power line when wiring.
1.6.2
Notes on the use of Serial I/O ports
(1)
The length of the cable used for serial I/O port is 15 m or less.
(2)
Use the shield cable for the cable for serial I/O port. (To prevent malfunction by noise)
(3)
The standard of the cable used for the radiation test of the R3765/67G series is A01235.
(4)
Do not bundle I/O cable and AC power line when wiring.
1.6.3
Note on the Probe Connector
When a cable is connected to the probe connector for any purposes other than the automatic
calibration kit (R17050), the cable must have countermeasures against radiation installed.
For more information on countermeasures against radiation, contact an ADVANTEST service
representative.
1.7
Measurement Time
The sweeping time of the R3765/67G series is determined by frequency set-up time and data
acquiring time.
As the SWEEP TIME on the display screen shows the data acquiring time, the actual sweep time
becomes longer than the displayed SWEEP TIME under the influence of frequency set-up time.
Refer to APPENDIX for details.
1.8
Input Signal Level Overload Cautions
The maximum measurable levels at the input section are as follows.
R3765AG/67AG: 0dBm
R3765BG/67BG: 6dBm
R3765CG/67CG: +12dBm
(OPT12 or OPT13: +20dBm)
If more than about 5dB over the maximum level is input, “Overload” is displayed.
