SPECIFICATION No. JVR03Z-7148B

5/12

UNCONTROLLED

COPY

REFERENCE ONLY

5.5 High temperature exposure

The wiper contact point should be preset at about 50% position of effective rotational angle. After that, the

trimmer potentiometer should be kept in a chamber at 70±2°C without loading for 500±12 hours. The

resistance value should be measured after keeping the trimmer potentiometer in a room for 1.5±1/6 hours.

5.6 Humidity exposure

The wiper contact point should be preset at about 50% position of effective rotational angle. After that,

the trimmer potentiometer should be kept in a chamber at 40±2°C and 90 to 95% without loading for 500±12

hours. The resistance value should be measured after keeping the trimmer potentiometer in a room for 5±1/6

hours.

5.7 Load life

The wiper contact point should be preset at about 50% position of effective rotational angle. After that, the

trimmer potentiometer should be kept in a chamber at 50±2°C with loading the 1/2 rated voltage between #1

and #2 terminals, intermittently 1.5 hours ON and 0.5 hours OFF for 1000±12 hours. The resistance value

should be measured after keeping the trimmer potentiometer in a room for 1.5±1/6 hours.

5.8 Humidity load life

The wiper contact point should be preset at about 50% position of effective rotational angle. After that, the

trimmer potentiometer should be kept in a chamber at 40±2°C and 90 to 95% with loading the 1/2 rated voltage

between #1 and #2 terminals, intermittently 1.5 hours ON and 0.5 hours OFF for 1000±12hours.

The resistance value should be measured after keeping the trimmer potentiometer in a room for 5±1/6 hours.

5.9 Temperature cycle

The wiper contact point should be preset at about

50% position of effective rotational angle. After that,

the trimmer potentiometer should be subjected to

Table 2 temperatures for 5 cycles. The resistance

value should be measured after keeping the trimmer

potentiometer in a room for 1.5±1/6 hours.

5.10 Rotational life

The wiper should be rotated over 90% of the effective rotational angle without loading at a speed of 10 cycles

per minute, for 10 cycles continuously. The resistance value should be measured after keeping the trimmer

potentiometer in a room for 10±5 minutes.

5.11 Vibration

The wiper contact point should be preset at about 50% position of effective rotational angle. After that, the

trimmer potentiometer should be tested under the condition of the amplitude of 1.5mm, the frequency range

from 10 to 55Hz (shall be traversed in approximately one minute) and 2 hours in each of 3 mutually

perpendicular directions. (Total 6 hours)

Table 2

Sequence

1

2

3

4

Temp. (°C)

-25±3

+25±2

+85±3

+25±2

Time (min.)

30±3

10 max.

30±3

10 max.