375A

Signaling Bit Monitor provides simultaneous display of two DS1 streams

  • Displays signaling bits (A-B-C-D) for 24 channels in both directions
  • Displays 8-bit data in both direction
  • Automatic framing to D4, ESF, or SLC-96®
  • Automatic code detection of B8ZS and QRSS (optional)
  • Indicators for standard alarms and errors:
  • LED history mode holds errors or channel seizures for unattended operation
  • Terminated or bridged span connection

Error Monitor Display provides compliance with CCITT G.821

  • Dual input jacks for daisy chaining equipment
  • Access to all error counts (BPV, CRC, Frame, etc.)
  • Access to all error statistics (errored seconds, severely errored seconds, unavailable seconds, etc.)
  • Information available as both counts and rates
  • 24-hour data history in 15-minute blocks
  • RS-232C serial port for remote computer or printer

Audio Channel Monitor allows both sides of a conversation to be checked

  • Single- or dual-direction monitoring is selectable
  • Displays 8-bit data in both directions for selected channel
  • Displays signaling bits for selected channel
  • 0 dBm, 600 Ohm TLP VF output jack and local speaker

General
Size: 5.25" high x 17" wide x 7" deep
Weight: Net 11 lbs. Shipping 17lbs.
Temperature range: 0-50 degrees Centigrade
Humidity (max): 85% noncondensing
Power: 110-220 VAC 50-60 Hz @ 1.5 Amps or -48 VDC @ 1.0 Amps (option 375A-01)

Accessories
#9400-0001-02 80 Column Printer with Serial Cable and Buffer Memory
#9400-0004-01 60" 310 Male to 310 Male Cable
#9400-0006-01 60" 310 Male to Bantam Male Cable
#2100-0050-01 96" Serial Interface Cable

Specifications/Line Interface

  • Line Format: DS-1 AMI or B8ZS Line Code
  • Framing Format: D4 Superframe, Extended Superframe, and SLC-96® with automatic selection
  • Input Frequency: 1.544 Mbps ±15 kbps
  • Jitter Tolerance: Meets or exceeds CCITT O.171, PUB 41451, PUB 43801, and PUB 62411-1985.
  • Input Impedances: Terminated: 100 Ohms or Bridged: >1000 Ohms; front panel selectable
  • Input Level: 200 mV to 6 V base-to-peak (-24 to +3 dB DSX)
  • Input Connectors: Dual parallel 310-type three-conductor jacks or Optional Rear Panel Access
  • Test Patterns: Automatically detects QRSS Framed or Unframed (Option 375A-02)

Signaling Bit Monitor Display Features/LED indicators

  • History and Terminate mode
  • Line and Framing Format
  • Standard Errors and Alarms
  • Signaling bits (A-B-C-D)
  • 8-bit received channel data
  • History Mode: History Mode holds LED status: Front panel selectable.

Error Monitor

  • Display Features: 24–character alphanumeric LED display.
  • Serial Connector: DB9-F for printer or remote computer
  • Serial Protocols: XON/XOFF, RTS/CTS, or DTR/DSR; configurable data, start, stop, and parity format
  • Data Format: Asynchronous; selectable baud rate, parity, data bits and stop bits.

Intrinsic Noise: 10 dBrnC (idle code received)

  • Channel Selection: Channels 1 to 24 selectable via up/down scroll switches
  • Audio Monitoring: Speaker and 0 dBm, 600 Ohm TLP, 310-type, three-conductor jack
  • Audio Source: Either side individually or both
  • Speaker Control: Volume adjust knob and monitor select/mute source button
  • Display Features: 4-bit A-B-C-D signaling data for each direction; two, seven segment numerics for channel ID

Display Features: 4-bit A-B-C-D signaling data for each direction; two, seven segment numerics for channel ID.