Essilor Instruments Vision-C 600, User Manual, Page: 45 / 51

e. Electromagnetic immunity, radio frequencies
The product is intended for use in the electromagnetic environment specified below. It is up to the
customer or the user to verify that the instrument is used in this environment.
Portable RF communications devices (including devices such as antenna cables and external antennas)
should not be used closer than 30 cm (12 inches) to any part of the device under test, including cables
specified by the manufacturer. Otherwise, the performance of these devices could be affected.
Immunity test
Test level IEC 60601 &
Compliance level
Electromagnetic environment –
Guidelines
Electromagnetic fields radiated radio
frequency
(IEC61000-4-3)
3 V/m
80 MHz to 2.7 GHz
80% MA at 1 kHz
Occupational healthcare facility.
Proximity Fields emitted by RF Wireless
Communications Devices (IEC 61000-4-
3 Interim Method)
V/m
710 MHz, 745 MHz,
780 MHz, 5240 MHz,
5550 MHz, 5785 MHz,
27 V/m
385 MHz
28 V/m
450 MHz, 810 MHz,
870 MHz, 930 MHz,
1720 MHz, 1845 MHz,
1970 MHz, 2450 MHz,
Field-induced conducted disruptions RF
(IEC610004-6)
3 V
150 Khz to 80 MHZ
6 V in ISM frequency and band
between 0.15 MHz and 80 MHz,
amateur radio frequency
including 80% MA at 1 KHz
4. Cleaning & Maintenance
In order to ensure safety and the performance of the instrument, all maintenance operations,
unless otherwise specified in this manual, must be carried out by qualified maintenance
technicians.
This instrument is an optical device. Handle it carefully at all times.
Do not touch the screen with your fingers, and take care to clean off any dust buildup which would
be likely to distort the optotypes display.
If you find that this device is dirty, you can clean it as often as you want (see after the specific
cleaning methods).
To avoid any incident, unplug the instrument before cleaning.
Essilor will make available on request circuit diagrams, component part lists, descriptions, calibration
instructions, or other information that will assist the dealer to repair those parts of this device that are
designated by ESSILOR as repairable by the dealer.
a. Cleaning
Always use a slightly damp soft cloth (microfiber, silicone), to clean the intrument.
Do not spray liquid on the screen or other parts of the product, regardless of the liquid, in order not
to risk damaging the electronic boards.
Do not use benzene, thinners, organic solvents, ether or gasoline to clean the instrument.
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45 Vision-C 600 - Polarized visual chart system > V1- 02-2021 (VRSQSE)