Advent Instruments Inc. 1. Getting Started
AI-5620 User Guide 3
CAS/DTAS tones is fully programmable in order to verify correct operation of the signal
generation equipment.
Unlike a traditional terminal equipment device, the AI-5620 can generate and measure
signals in both the on and off-hook line states. This includes the ability to perform AC
frequency and level sweeps with programmable filters, or perform sweeps of DC
resistance for verification of the connected DC feeding bridge characteristics.
The second key element to the AI-5620 is its line monitoring capability. While operating
independently from any signal generation, it continuously monitors the line interface
making measurements and listening for telephony related events. These events include
line state changes, ringing, dialing (pulse and DTMF), Caller ID FSK, and metering
pulses. They may be sorted and filtered in a wide range of methods for discovering
unexpected conditions.
In addition to event detection, a chart recorder feature stores a wide range of
measurements for longer term testing. The measurements include line voltage, loop
current, AC signal level, frequency, and distortion.
As an option to the AI-5620, the AI-ET004 Waveform Capture allows real time
downloading and viewing of the line interface voltage and current waveforms. The
waveform capture can be configured to record continuously, or just as telephony events
are detected. In addition, the option provides support for viewing real time FFT's of the
downloaded waveforms.
The included TRsSim software provides a high-level graphical user interface for both
controlling the AI-5620's actions, and for displaying the results of its line monitor
functions. The software operates on a Windows PC with a USB connection to the AI-
5620. A brief introduction to the software is provided in a following section. For more
complete information, see the included TRsSim – Terminal Equipment Simulator User
Guide which provides more details on the operation of the software.
The rear panel of the AI-5620 provides various connectors for expanding its testing
ability. A BNC audio input connector allows external signals to be routed to the line
interface circuitry or the various signals detectors internal to the AI-5620. In addition, a
BNC audio output connector allows monitoring signals present at the line interface, or
from many of the AI-5620's internal signal generators. A digital I/O connector may be
used to monitor conditions such as off-hook, ringing detection, FSK decoder outputs, or
force the AI-5620 to an off-hook state.
1.2 Package Contents
Use care when unpacking the AI-5620 to avoid damage to the instrument and the packing
materials. Retain the packing materials in case the unit is transported in the future.
Please inspect the shipping container and the contents for any damage. If visible damage
is present, contact your local sales representative or Advent Instruments directly (see
Appendix C: Support). Keep the shipping materials for the carrier inspection.
The package should contain the following items:
• AI-5620 Terminal Equipment Simulator
• Full speed USB cable
• Telephone Cord with RJ-11 Connectors
• AC Power Mains Cable (plug type dependent on destination country)
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