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Report No.:  EM201300550-9             Application No.:  ZJ00032797              Page 41 of    69 

 

 

The performance criteria are:   
• 

Performance criteria A for immunity tests with phenomena of a continuous nature;   

• 

Performance criteria B for immunity tests with phenomena of a transient nature;   

• 

Performance criteria C for immunity tests with power interruptions exceeding a certain time.   

The equipment shall meet the minimum performance criteria as specified in the following 
clauses. 

A 

Shall operate as intended.   
May show degradation of performance 
(see note 1).   
Shall be no loss of function.   
Shall be no unintentional transmissions.

Shall operate as intended.   
Shall be no degradation of performance (see 
note 2).   
Shall be no loss of function.   
Shall be no loss of stored data or user 
programmable functions. 

B 

May show loss of function (one or 
more).  
May show degradation of performance 
(see note 1).   
No unintentional transmissions. 

Functions shall be self-recoverable.   
Shall operate as intended after recovering.   
Shall be no degradation of performance (see 
note 2).   
Shall be no loss of stored data or user 
programmable functions. 

C 

May be loss of function (one or more). 

Functions shall be recoverable by the 
operator.  
Shall operate as intended after recovering.   
Shall be no degradation of performance (see 
note 2). 

NOTE 1: Degradation of performance during the test is understood as degradation to a level not 

below a minimum performance level specified by the manufacturer for the use of the 
apparatus as intended. In some cases the specified minimum performance level may be 
replaced by a permissible degradation of performance.     
If the minimum performance level or the permissible performance degradation is not 
specified by the manufacturer then either of these may be derived from the product 
description and documentation (including leaflets and advertising) and what the user may 
reasonably expect from the apparatus if used as intended.   

NOTE 2: No degradation of performance after the test is understood as any degradation below a 

minimum performance level specified by the manufacturer for the use of the apparatus as 
intended. In some cases the specified minimum performance level may be replaced by a 
permissible degradation of performance. After the test no change of actual operating data 
or user retrievable data is allowed.     

Report No.:  EM201300550-9             Application No.:  ZJ00032797              Page 42 of    69 

 

If the minimum performance level or the permissible performance degradation is not 
specified by the manufacturer then either of these may be derived from the product 
description and documentation (including leaflets and advertising) and what the user may 
reasonably expect from the apparatus if used as intended. 

 

Report No.:  EM201300550-9             Application No.:  ZJ00032797              Page 43 of    69 

 

 

The performance criteria A shall apply.   
Tests shall be repeated with the EUT in standby mode (if applicable) to ensure that unintentional 
transmission does not occur. In systems using acknowledgement signals, it is recognized that an 
ACKnowledgement (ACK) or Not ACKnowledgement (NACK) transmission may occur, and 
steps should be taken to ensure that any transmission resulting from the application of the test is 
correctly interpreted.   

 

The performance criteria B shall apply, except for voltage interruptions of 5 000 ms duration, 
for which performance criteria C shall apply.   
Tests shall be repeated with the EUT in standby mode (if applicable) to ensure that unintentional 
transmission does not occur. In systems using acknowledgement signals, it is recognized that an 
acknowledgement (ACK) or not-acknowledgement (NACK) transmission may occur, and steps 
should be taken to ensure that any transmission resulting from the application of the test is 
correctly interpreted. 

 

The performance criteria A shall apply.   
Where the EUT is a transceiver, under no circumstances, the transmitter shall operate 
unintentionally during the test. In systems using acknowledgement signals, it is recognized that 
an ACK or NACK transmission may occur, and steps should be taken to ensure that any 
transmission resulting from the application of the test is correctly interpreted. 

 

The performance criteria B shall apply, except for voltage dips of 100 ms and voltage 
interruptions of 5000 ms duration for which performance criteria C shall apply.   
When the EUT is a transceiver, under no circumstances, the transmitter shall operate 
unintentionally during the test. In systems using acknowledgement signals, it is recognized that 
an ACK or NACK transmission may occur, and steps should be taken to ensure that any 
transmission resulting from the application of the test is correctly interpreted. 

Report No.:  EM201300550-9             Application No.:  ZJ00032797              Page 44 of    69 

 

 

Basic Standard 

EN 61000-4-2:2009 

Discharge Impedance 

330 ohm / 150 pF 

Discharge Voltage 

Air Discharge              : 8 kV; 

Contact Discharge: 4 kV   

Polarity 

Positive & Negative 

Number of Discharge 

Minimum 10 times at each test point 

Discharge Mode 

Single Discharge 

1 second minimum 

a) The EUT was located 0.1 m minimum from all side of the HCP (dimensions 1.6m * 0.8m). 

b) The support units were located another table 30 cm away from the EUT, but direct support 

unit was/were located at same location as EUT on the HCP and keep at a distance of 10 cm 

with EUT. 

c) The time interval between two successive single discharges was at least 1 second. 

d) Contact discharges were applied to the non-insulating coating, with the pointed tip of the 

generator penetrating the coating and contacting the conducting substrate. 

e) Air discharges were applied with the round discharge tip of the discharge electrode 

approaching the EUT as fast as possible (without causing mechanical damage) to touch the 

EUT. After each discharge, the ESD generator was removed from the EUT and re-triggered 

for a new single discharge. The test was repeated until all discharges were complete. 

f) At least ten single discharges (in the most sensitive polarity) were applied at the front edge of 

each HCP opposite the center point of each unit of the EUT and 0.1 meters from the front of 

the EUT. The long axis of the discharge electrode was in the plane of the HCP  and 

perpendicular to its front edge during the discharge. 

g) At least ten single discharges (in the most sensitive polarity) were applied to the center of 

one vertical edge of the Vertical  Coupling  Plane (VCP) in sufficiently different positions 

that the four faces of the EUT were completely illuminated. The VCP (dimensions 0.5m * 

0.5m) was placed vertically to and 0.1 meters from the EUT.