Black Box COMPACT T1 MT850A - Manual (Page 436)

11-4 Compact T1 - Release 6.1
Power Supply
Technical Specifications
Ringing Generators
l Nominal 85 V rms (108 V rms max)
l Referenced to -54 VDC (-60 VDC max) output
l Supports three jumper-selectable ringer waveform shapes
l Drives 25 REN indefinitely with minimum output voltage of 65 V rms at normal
ringer cadence
l
Ringer frequency is selectable, 20 25 or 50 Hz ± 15%
l
Overload protected
Regulatory Approvals
USA
l UL60950
l FCC Part 15, Class A
l NEBS Level 3 certified for type 2 and 4 equipment
GR-1089-CORE, GR-63-CORE
Canada
l CSA C22.2 No. 60950-00
l ICES-003, Class A
Mexico
l NOM 19, Safety of Data Processing Equipment