High Density Remote Power Supply Unit (HD R-PSU)
The Tellabs 1000 Multi-service Access Platform (MSAP) Series High Density Channel Bank Assembly (HD CBA) Remote Power Supply Unit (HD R-PSU) plug-in card converts standard -48 V DC from batteries or a rectifier into the voltages required by the common control equipment and plug-in cards located in a HD CBA.

Features and Benefits

  • Low thermal dissipation
  • Low output voltage alarm
  • Over-voltage/over-current shutdown
  • Thermal overload protection
  • Reverse input polarity protection
  • Programmable ringing generator
  • High-efficiency switching DC-DC converter
  • Compatibility with the Tellabs 1000 series HD CBA only

Included Highlights

Superior Reliability

A Tellabs 1000 series HD CBA requires only one HD R-PSU card; however, a second dedicated power supply slot allows for redundancy. When two HD R-PSUs are installed, they share the total power load to the HD CBA. In addition, if one HD R-PSU fails, the second carries the total power load. The HD R-PSU card features input fusing to protect redundancy.

Efficient Operations

The HD CBA R-PSU card also generates sine wave ringing voltage for use by the subscriber interfaces. The card uses a DC-to-DC switching converter for high efficiency and low thermal dissipation.

Ease of Maintenance

LEDs and receptacles on the faceplate of the HD R-PSU plug-in card have the following uses. Visual LEDs to identify quick operations, troubleshooting and fusing conditions. Three system voltage sampling jacks are also present for +5Vj ack, -48V jack, and Ground.


LED Indicators
  • Red FUSE — Failed fuse on plug-in card
  • Green ACTV — Plug-in card is active
  • Red FAIL — Plug-in card failure
Test and Measurement
  • +5V jack
  • -48V jack
  • GND jack
DC-DC Converter
  • Low voltage disconnect: -37 V DC
  • Low voltage alarm: -44 V DC
  • Output: +5.15 V DC ±1.5% and -5.15 V DC ±10.0%
  • Input: -42.0 to -60.0 V DC
  • ±5.15 V DC: x < 1.5% load, x < 1.5% line and x < 0.2% per specified temp range
  • < 1.5% line
  • < 1.5% load
Ripple and Noise (DC - 20 MHz)
  • -52 V DC, -32 V DC: < 100 mV peak-to-peak
  • ±5 V DC: 1.0% peak-to-peak
Output Current
  • +5 V DC: 20 A
  • Total available output: 165 W
  • -32 V DC: 3 A
  • -52 V DC: 2 A
  • -5 V DC: 3 A
  • Output ground: Referenced to input battery ground
  • Internal converter: 500 V input to output
Ringing Generator
  • Power (continuous) 5 REN
  • Frequency tolerance ± 2.5%
  • Output frequency in Hz (provisionable): 16.7, 17.7, 18.7, 20.0, 21.0, 22.3, 23.5, 25.0, 26.4, 28.0, 29.8, 31.6, 33.3, 35.4, 37.6, 40.0, 42.2, 44.4, 47.4, 50.0 Hz
  • Voltage tolerance: ± 5%
  • Output voltage range: 60, 65, 85, 95 V AC
  • Pedestal voltage: -48 V DC
  • Humidity: 5% - 95%, non-condensing
  • Storage temperature: -40°C to +70°C (-40°F to +158°F)
  • Operating temperature: -40°C to +65°C (-40°F to +149°F)
  • Weight: 1.0 lb (0.45 kg)
  • Depth: 10.5 in (26.67 cm)
  • Width: 1.0 in (2.54 cm)
  • Height: 5.125 in (13.018 cm)
  • GR-1089-CORE
Product Specifications Sheet

High Density Remote Power Supply Unit (HD R-PSU)
Product Specifications
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