Instruction Manual

Specifications for the D400 and D450
T1 Receiver
• 1.544 Mbps: ±130 pps
• Level range: ±3 V bipolar peak to peak
±75 mV
T1 Measurements
• T1 Line Frequency
• dBdsx
• dBm
• Vpp
• Frame Error Count
• BPV Count
• CRC-6 Error Count
• Slip Count
• Frame Error Rate
• BPV Rate
• CRC-6 Error Rate
• % Available Seconds
• % Errored Seconds
• % Error Free Seconds
• Available Seconds
• Errored Seconds
• Error Free Seconds
• Severely Errored Seconds
• Yellow Alarm
Channel Measurements
• Frequency range: 0 to 3990 Hz ±2 Hz
• Level range: +3.0 to -60.0 dBm
• Binary Coding: any 8-bit pattern
• PCM Offset: µ-255 law
• Signaling bits: 24 bit scan
Analog Input/Output
• 600 ohms, balanced, non-DC blocked +/-5%
T1 Source
• 1.544 Mbps ±5 ppm bipolar peak to peak
• AMI, B8ZS, BIT7 (bit 7 stuffing)
• SF, SF/CCIS, ESF, ESF/CCIS
• SLC Series 5, SLC 96
• Output Pulse ±3 volts bipolar peak to peak, -7.5 and
-15dB LBO
• Drop and Insert is fail-safe if AC power fails
Channel Synthesizer
• Frequency range: 0 to 3990 Hz, in 10 Hz steps
• Level range: +3.0 to –60.0 dBm, 0.1 dB steps
• Binary Coding: any 8-bit pattern
Status Indicators
T1 T3
• Frame Error (FRM) (FRM)
• Bipolar Violations (BPV) (BPV)
• CRC-6 Errors (CRC) (PAR)
• Yellow Alarm (ALM) (ALM)
• Loss of Signal (LOS) (LOS)
General
• Built-in Clock and Calendar
• Results Print Range: 1 min - 24 hrs.
• Results Reset Range: 1 min - 24 hrs.
• 3 factory-programmed set-ups
• 15 user-defined setups
• On-line HELP key
• 2 RS-232C ports configured from 300-9600 baud
• FDL access in/out rear panel 9-pin connector
Connectors
• T3: WECO Type 560A (440A compatible) jacks
• T1: WECO Type 310 or Bantam (miniature) jacks
• Analog: WECO Type 310 or Bantam jacks
• Headset: WECO Type 310 jacks
Environmental
• Operating Temperature Range: 0 - 40° C
• Relative Humidity: 0 - 90% non-condensing
• Storage Temperature: 0 - 70° C
Dimensions
D400 D450
• Width: 16.00 in (40.64 cm) 16.00 in (40.64cm)
• Height: 6.75 in (17.145 cm) 6.75 in (17.14cm)
• Length: 17.63 in (44.78 cm) 11.00 in (27.94cm)
• Weight: 22.84 lbs (10.36 kg) 14.91 lbs (6.76 kg)
Power Requirements
• 115 VAC, 50 - 60 Hz, 0.5 amp maximum
• Fuse : 1 amp slow blow
Standards
The D400 (where applicable) conforms to:
PUB 62411 ANSI T1.403-1989
PUB 54016 ANSI T1.503-1989
PUB 43801 ANSI T1.101-1987
CCITT G.821 ANSI T1.103-1987
TR-TSY-000008 ANSI T1.102-1987
ANSI T1.104-1988
ANSI T1.103a-1990