ROI-S02775 GENERAL
1-7
Table 1-1 Performance Characteristics of IDU (Cont’d)
Analog service channel (ASC) signal interface
Frequency: 0.3 to 3.4 kHz
Impedance: 600 ohms
Digital service channel (DSC) signal interface
Bit rate: • 64 kbps (G703/V.11)
• 9.6 kbps (asynchronous)
Level: RS-232, RS-422 or RS-485 (9.6k)
Meet specifications of ITU-T G.703/V.11 (64k)
Wayside (WS) signal interface
Bit rate: 2.048 Mbps
Level: Meet specifications of ITU-T G.703
Dimensions
•2 MB x 2/2 MB x 4/2 MB x 8/
2 MB x 16 (for 120 ohms interface)/
8 MB x 1/34 MB x 1 fixed bit rate
system/2 MB x 2/4/8 bit rate free
system/2 MB x 2/4/8/16 bit rate free
system for 120 ohms interface:
482 wide
× 44 high × 240 deep (mm)
• 2 ΜΒ x 16 fixed bit rate (for 75
ohms nterface) system/2 MB x 2/4/8/
16 bit rate free system for 75 ohms
interface:
482 wide
× 66 high × 240 deep (mm)
Weight
•2 MB x 2/2 ΜΒ × 4/2 ΜΒ × 8/
2 ΜΒ x 16 (for 120 ohms interface)/
8 ΜΒ x 1/34 ΜΒ x 1 system: Approx. 4 kg (including all options)
• 2 ΜΒ x 16 (for 75 ohms interface)
system: Approx. 5 kg (including all options)
Environmental temperature range
Operation: 0°C to +50°C
Storage: −30°C to +70°C
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