User's Manual

1550C/1555 Users Manual Supplement
5/13 4
Change #4, 65440, 65598
On page 1, delete the last paragraph on the page.
On page 5, add the following to the Symbols table:

Conforms to relevant South Korean EMC Standards.
CAT II
Measurement Category II is applicable to test and measuring
circuits connected directly to utilization points (socket outlets
and similar points) of the low-voltage MAINS installation.
CAT III
Measurement Category III is applicable to test and measuring
circuits connected to the distribution part of the building’s low-
voltage MAINS installation.
CAT IV
Measurement Category IV is applicable to test and measuring
circuits connected at the source of the building’s low-voltage
MAINS installation.
On pages 29 & 30, under General Specifications, remove the
Enclosure Setting, Electromagnetic Compatibility,
Certifications, Safety Compliance and Pollution Degree 2
and add:
IP Rating .................................................... IEC 60529: IP40
Safety ......................................................... IEC 61010-1: 600 V CAT IV / 1000 V
CAT III, Pollution Degree 2
Electromagnetic Environment ................. IEC 61326-1: Portable
Electromagnetic Compatibility ................ Applies to use in Korea only. Class A
Equipment (Industrial Broadcasting &
Communication Equipment)
[1]
[1] This product meets requirements for industrial (Class A) electromagnetic wave
equipment and the seller or user should take notice of it. This equipment is
intended for use in business environments and is not to be used in homes.