Table of Contents
Advertisement
During the Power On Self Test (POST), the RF Generator performs a number of internal self-tests of its
software:
• Verifies integrity of system random access memory (RAM).
• Verifies contents of program read-only memory (ROM).
• Activates all visual indicators, including the LCD screen and the backlit Soft Key Menu buttons
around the screen .
• Sounds Power On tone.
• Verifies operation of radiofrequency (RF) generation and measurement circuits.
• Displays a notice if POST must restore the factory default settings due to a corruption of persistent
settings, such as screen brightness or tone volume settings .
Prior to using the RF Generator, observe that the screen, lights, and audible alarms cycle .
Software Version
The RF Generator's software release version will be displayed when the Power On Self Test is completed .
The RFG2 enters Identification Mode as shown in Figure 5 below .
RFG2 - VERSION 4.1.0
Figure 5: Identification Mode Showing Software Version
Electrical Safety Tests
The VNUS RF Generator has been thoroughly tested for isolation, leakage, and grounding integrity prior
to shipment . Should it become necessary to perform these tests, the use of the appropriate test
equipment, and knowledge of the appropriate sections of BS EN 60601-1:1990 +A1 +A2 which pertain
to these tests is mandatory . VNUS Medical Technologies assumes no responsibility for damage to the
instrument due to improper application of the tests below . If in doubt, consult the Safety Analyzer Users
Manual or VNUS Medical Technologies prior to conducting the following tests .
Electrical Safety Tests 220-240V
A special test cable from VNUS is available for these tests. Please contact VNUS Customer Service for
information on obtaining the Biomed Test Cable (TL100-119-02).
1 . Set the line voltage to 264V and set the frequency to 50Hz . DO NOT EXCEED 280V!
2 . Plug the line cord of the VNUS Generator into the leakage tester for all tests .
6
VNUS Radio Frequency Generator
3 . For source leakage and isolation tests, use the Biomed Test Cable to access patient connections . Short
electrodes and thermocouple wires together for testing .
4 . For the 25A test, connect the ROD-L leads to the chassis ground lug, and to the ground pin of the
power cord .
WARNING! HIGH VOLTAGE! DO NOT TOUCH THE EQUIPMENT DURING THE ISOLATION TESTS!
Table 2: Electrical Safety Test Limits 240V
Parameter
Input Voltage
Rated line + 10%
Line Cord Resistance
N/A
25A chassis-cord gnd
10 seconds
Earth Leakage
Power Norm, GND OPEN
Earth Leakage
Power Rev, GND OPEN
Source Leakage, Applied Part
Power Normal, GND OPEN
Source Leakage, Applied Part
Power Reversed, GND OPEN
Iso Test, Applied Part
Power Normal
Iso Test, Applied Part
Power Reversed
Electrical Safety Tests 110-120V
1 . Use the variable autotransformer and the DVM to set the line voltage to 132V . DO NOT EXCEED 140V!
2 . Plug the line cord of the VNUS Generator into the leakage tester for all tests .
3 . For source leakage and isolation tests, use the Biomed Test Cable to access patient connections . Short
electrodes and thermocouple wires together for testing .
4 . For the 25A test, connect the ROD-L leads to the chassis ground lug, and to the ground pin of the
power cord .
WARNING! HIGH VOLTAGE! DO NOT TOUCH THE EQUIPMENT DURING THE ISOLATION TESTS!
Table 3: Electrical Safety Test Limits 120V
Parameter
Input Voltage
Line Cord Resistance
25A chassis-cord gnd
Earth Leakage
Earth Leakage
Source Leakage, Applied Part
Source Leakage, Applied Part
Iso Test , Applied Part
Iso Test, Applied Part
Service Manual
Conditions
Passing
264V
< 100mΩ
< 100mΩ
< 500 μA
< 500 μA
< 10 μA
< 10 μA
< 10 μA
< 10 μA
Conditions
Passing
Rated line + 10%
132V
N/A
< 100mΩ
10 seconds
< 100mΩ
Power Norm, GND OPEN
< 300 μA
Power Rev, GND OPEN
< 300 μA
Power Normal, GND OPEN
< 10 μA
Power Reverse, GND OPEN
< 10 μA
Power Normal
< 10 μA
Power Reversed
< 10 μA
7
Advertisement
Table of Contents
