EXFO FTB-500 (Window XP) - Manual (Page 29)

Safety Information
FTB-500 19
Electrical Safety Information
Maximum operation altitude

2000 m (6562 ft) (unit connected to external power
supply)

5000 m (16405 ft) (unit operated from battery)
Pollution degree

2 (unit connected to external power supply)

3 (unit operated from batteries)
c
Overvoltage category

unit: I

AC adapter: II
Measurement category Not rated for measurement categories II, III, or IV
Input power
d

unit (four slots): 24 V; 8 A

AC adapter (four slots):
100 - 240 V; 50/60 Hz; 4.8 A

unit (eight slots): 100 - 240 V; 50/60 Hz; 4.8 A
a. With some modules, the maximum operation temperature is 40 °C (104 °F).
b. Measured in 0 °C to 31 °C (32 °F to 87.8 °F) range, decreasing linearly to 50 % at 40 °C (104 °F).
c. Equipment must be normally protected against exposure to direct sunlight, precipitation and full wind
pressure.
d. Not exceeding ± 10 % of the nominal voltage.
Equipment Ratings