"Our job is helping you do your job"
Whether installing, servicing or simply maintaining voice service, the technician must consider the possible presence of digital traffic. Tempo’s DigAlert™ 350 Test Sets offer the latest in data protection, allowing technicians to test the POTS service on a live ADSL line without fear of bringing down the data service.
Whether installing, servicing or simply maintaining voice service, the technician must consider the possible presence of digital traffic. Tempo’s DigAlert™ 350 Test Sets offer the latest in data protection, allowing technicians to test the POTS service on a live ADSL line without fear of bringing down the data service.
With this innovative design, Tempo set new, unmatched standards in both quality and customer satisfaction. Our test sets give meaning to the term “weatherproof” with an award-winning, waterproof case design that allows technicians to operate with confidence in even the most extreme weather conditions. Other key advancements include a high-voltage alarm and a quick release, non-metallic belt clip composed of Verton® RF, a strong, lightweight structural composite. This combination of rugged technology enables Tempo to offer the best warranty in the industry: 3 years.
In addition to all the features of the A340 range, D350 offers DigAlert digital services detection and lockout. Warning the user automatically if they attempt to go off-hook on a line that could be carrying a digital service. This lockout can be quickly overridden if needed.
Features
Tempo's Nautilus range of extremely tough and weatherproof test telephones has been trusted by major global telephone companies since 1999. Built to withstand years of use literally "in the field", constructed from a super-tough polymer alloy and sealed with resilient and long-life silicone seals. The ranges are available with Bell (North American) and ETSI (European and associated markets) settings. Various models are available within each telephony settings region, with and without loud-speaking or full-hands-free, and with and without DigAlert advanced "Digital Services Protection" lockout features. All models are equipped with overvoltage and overcurrent warning and lockout, and all require a 9V battery for operation.
Digital Services Protection – In the “on hook” mode, on connection to a circuit, the Test Telephone sounds an alarm to alert the user to the presence of voltages above 75V to 80V DC. Such voltages are normally present on circuits carrying digital services. If the circuit is active, the user can select the high impedance MONITOR mode and listen to the sound to determine if the circuit is carrying digital services without disrupting the traffic. This is present in all models and can be overridden if the extended voltage is expected. If the unit detects a voltage above 120 V DC, this sounds a different alarm and cannot be overridden, as this is definitely not a POTS line.
The DigAlert™ Digital Services Detection and Lockout feature present in D350 and D361 models adds another layer of protection for digital services carried on telephony twisted pairs. Detecting "out-of-band" signals and preventing immediate "off-hook" this helps ensure that users of digital services are disrupted as little as possible during maintenance works. Effectively preventing the old practice of "tag running" and helping to ensure technicians only go "off-hook" when they need to. The high impedance monitor and polarity test, plus built-in xDSL blocking filter, help to minimize in-service errors that may occur to the DSL service.
| Electrical | |
| Loop Limit | 5kΩ |
| Minimum Loop Current | 10mA |
| Max. Off-Hook DC Resistance | 300Ω |
| Min. DC Resistance in: Idle Monitor and Lockout | 10MΩ @ 300VDC |
| Min. AC Impedance in Monitor | 400kΩ @ 1kHz |
| Span Power Lockout Range min: | 120VDC |
| Span Power Lockout Range max: | 450VDC |
| Pulse (rotary) Dial | |
| Pulse rate | 10pps +/- 0.1pps |
| Break / Make | 60/40% +/- 1% |
| Interdigit Interval | 800 +/- 50mS |
| DTMF Output | |
| Tone Level | -6dBm |
| Tone Frequency error | ± 1% max |
| Tone Twist | 2dB ±1dB |
| Flash Duration | 100mS nominal |
| Memory Dialing | |
| Stored Number Capacity | 10 plus LNR |
| Stored Number Length | 32 digit/stored number |
| PBX Pause | 4 seconds |
| Power Source | |
| Battery | 1 x 9V Alkaline |
| Battery Life: Nominal: | 3 months |
| Continuous loudspeaking: | 30 hours |
| Low Battery | Visual and audible indication |
| Auto Shut-off | 5 minutes with no line DC, 20 with |
| Environment | |
| Operating Temperature | -34°C - +60°C |
| Storage Temperature | -50°C - +75°C |
| Water Resistance | IP: 67 per IEC 60529 |
| Physical Shock | 6m onto concrete |
| Physical | |
| Length | 248mm |
| Width | 70mm |
| Height | 86mm |
| Weight | 0.6kg |
| Warranty | |
| Length | 3 years |
| Electrical | |
| Loop Limit | 5kΩ |
| Minimum Loop Current | 10mA |
| Max. Off-Hook DC Resistance | 300Ω |
| Min. DC Resistance in: Idle Monitor and Lockout | 10MΩ @ 300VDC |
| Min. AC Impedance in Monitor | 400kΩ @ 1kHz |
| Span Power Lockout Range min: | 120VDC |
| Span Power Lockout Range max: | 450VDC |
| Pulse (rotary) Dial | |
| Pulse rate | 10pps +/- 0.1pps |
| Break / Make | 60/40% +/- 1% |
| Interdigit Interval | 800 +/- 50mS |
| DTMF Output | |
| Tone Level | -6dBm |
| Tone Frequency error | ± 1% max |
| Tone Twist | 2dB ±1dB |
| Flash Duration | 100mS nominal |
| Memory Dialing | |
| Stored Number Capacity | 10 plus LNR |
| Stored Number Length | 32 digit/stored number |
| PBX Pause | 4 seconds |
| Power Source | |
| Battery | 1 x 9V Alkaline |
| Battery Life: Nominal: | 3 months |
| Continuous loudspeaking: | 30 hours |
| Low Battery | Visual and audible indication |
| Auto Shut-off | 5 minutes with no line DC, 20 with |
| Environment | |
| Operating Temperature | -34°C - +60°C |
| Storage Temperature | -50°C - +75°C |
| Water Resistance | IP: 67 per IEC 60529 |
| Physical Shock | 6m onto concrete |
| Physical | |
| Length | 248mm |
| Width | 70mm |
| Height | 86mm |
| Weight | 0.6kg |
| Warranty | |
| Length | 3 years |
