METRON QA-ES, User & Service Manual, Page: 7 / 55

1. Introduction
This chapter describes the METRON QA-ES Electrosurgical Ana-
lyzer, including its features and specifications.
1.1 QA-ES Descrip-
tion
The METRON QA-ES Electrosurgical Analyzer (QA-ES) is a preci-
sion instrument designed to perform tests on high-frequency electro-
surgical units (ESU) in accordance with national and international
standards, and is designed to be used by trained service technicians.
Tests include:
•
automatic power distribution measurement;
•
crest factor measurement;
•
RF leak measurement, and;
•
return electrode monitor (REM) test
Testing is accomplished by measuring the ESU output against test
loads that are set and adjusted in the QA-ES. The QA-ES can auto-
matically execute a power distribution test with a load resistance
ranging from 10 ohms to a maximum of 5200 ohms. The automatic
measuring of the QA-ES, comprising crest factor measurements
with a bandwidth of 10 MHz, ensures that the test result is reliable
and reproducible.
Test results, shown in the QA-ES’s LCD display, can be printed out
directly, or transferred to a PC via the PRO-Soft QA-ES test auto-
mation software. PRO-Soft lets you design test protocols, remotely
control the QA-ES, and store the test results.
1.2 QA-ES Specifications
Generator Output: RF LEAKAGE: From active electrode or neu-
tral plate with an open or closed load circuit.
Mode Of Operation: Manual or user-programmable. Can be re-
motely controlled with PC utilizing accessory
PRO-Soft QA-ES software and RS-232 com-
munication cable connection.
Measurements: True RMS value of applied waveform.
RMS Bandwidth: 30 Hz to 10 MHz (+3 dB).
Low Frequency Filter: 100 Hz filter to avoid low frequency distur-
bance and/or interference.
Current: 20 mA to 2200 mA.
Current Accuracy: 20 - 2200 mA ± 2% of reading.
Load Resistance: 10 - 2500 ohms in steps of 25 ohms (@ dc).
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