Site Preparation
7705 SAR-M Chassis Installation Guide 73
Notes:
1. Short-term is a period of less than 96 consecutive hours and a total of no more than 15 days per year. This is
equivalent to 360 hours per year, with short-term periods occurring no more than 15 times per year.
2. Pollution degree is as defined in IEC 60950. Pollution Degree 2 applies where there is only non-conductive
pollution that might temporarily become conductive due to occasional condensation.
3. The AC operating voltage range applies only to the external AC power supply.
Earthquake Suitable for
high-risk areas
(Zone 4/California,
for short-duration
disturbance)
Suitable for high-
risk areas (Zone
4/California, for
short-duration
disturbance)
Suitable for
high-risk areas
(Zone 4/California,
for short-duration
disturbance)
Suitable for
high-risk areas
(Zone 4/California,
for short-duration
disturbance)
Pollution degree
2
2222
Rated voltage (DC) –48/–60 VDC
(–60 VDC is for
various European
countries)
+24 VDC
–48/–60 VDC
(–60 VDC is for
various European
countries)
+24 VDC
–48/–60 VDC
(–60 VDC is for
various European
countries)
+24 VDC
–48/–60 VDC
(–60 VDC is for
various European
countries)
+24 VDC
Operating voltage
range (DC)
–40 to –75 VDC
+20.0 to +28.3 VDC
–40 to –75 VDC
+20.0 to +28.3 VDC
–40 to –75 VDC
+20.0 to +28.3 VDC
–40 to –75 VDC
+20.0 to +28.3 VDC
Rated voltage (AC) 120/240 VAC 120/240 VAC 120/240 VAC 120/240 VAC
Operating voltage
range (AC)
90 to 264 VAC
3
90 to 264 VAC
3
90 to 264 VAC
3
90 to 264 VAC
3
Acoustic noise level < 72 dB (Declared
Sound Power)
< 72 dB (Declared
Sound Power)
Variant is silent Variant is silent
Table 6: Environmental Specifications per Variant (Continued)
Parameter 7 Ethernet Ports,
16 T1/E1 Ports,
1 Module Slot,
Actively Cooled
7 Ethernet Ports,
0 T1/E1 Ports,
1 Module Slot,
Actively Cooled
7 Ethernet Ports,
16 T1/E1 Ports,
0 Module Slots,
Passively Cooled
7 Ethernet Ports,
0 T1/E1 Ports,
0 Module Slots,
Passively Cooled