AT-2500 AUTOMATIC TELEPHONE ANALYZER
AT2500
| Tone & Pulse Dial AUTO TEST |
| DTMF Frequency and Level with Multi Impedance |
| Make-Break ratio and Dial speed |
| Bell test with Programmable Frequency and Level |
| Receiving and Transmission test with Artificial Line |
| Hook Switch Flash Time Test |
| Pay Phone Auto Test |
| Line Voltage, Current and Signal Level meter |
| Digital and Analog Display, R x & T x Monitor Ports |
| Automatic Go / Nogo test without manual operation |
| Very Low EMI/TEL Line Noise |
| Optional Automatic Answering Phone Test & Printer Port |
The At2500 Automatic Telephone Analyzer is designed for not only production line but also development of telephone,
dialer & answering phone, Pay phone test is available.
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It can detect DTMF tone or Dial pulse signal and switch to appropriate test automatically without manual switch.
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Bell test with preprogrammed ring frequency, level and on/off time for bell sensitivity and response test.
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With menu driven programming and Auto-programming easy to preset QC limits of Go/Nogo test and programmable automatic
test procedure enable telephone test without manual operation.
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On abnormal operation, error signal is indicated.
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With Non-volatile memory, programmed value and test procedure is saved during power fail.
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With analog meter, it can be easy and quickly measure variable value of ring voltage, line voltage, loop current, signal level.
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Line polarity is reversible, capable of testing pay phone operation.
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From 0 to 7 Km line simulation can test the telephone set in different condition.
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Specification |
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| Pulse dial test | |
| Dial number test: |
1,2,3,4,5,6,7,8,9,0 numbers test and display. Displays Error in case of over 10 pulse. |
| Dial speed test: | 6.5 pps - 25.0 pps |
| M/B range: | 20 - 80% |
| Display: | 3 digits |
| Resolution: | 1 digit |
| Accuracy: | 1 digit Max |
| Inerdigit Time: | 150ms Min |
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| DTMF Frequency measurment | |
| Accept Range: | Standard frequency ¡Ó2.5% |
| Accuracy: | ¡Ó0.1Hz |
| Resolution: | 0.1Hz |
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| Level measurement | |
| Range: | 0 dBm to - 25.5 dBm |
| Accuracy: | 0.5 dBm |
| Two tone level test: | test the level difference between LOW and HIGH group. |
| Flash time test: | 50 - 3000 msec |
| Line impedance: | 600/ 900/Option |
| Feed voltage: | 16 - 96 Vrms |
| Feed resistance: | 2 x 200 ohms |
| Receiving Test | |
| Supplying signal: | 400Hz sine wave (Programmable) |
| Tone: |
Dial tone continuously output for delay time (Programmable) late then switch to Busy tone (Normal, Continuous, Change) |
| Level: | - 6dBm (Programmable) |
| Transmission test: | Meter indication signal level of line 0.1 dBm accuracy. |
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| Bell ringer test | |
| Test mode: | Toggle, Auto sweep, Continuous |
| Frequency: | 10Hz to 95Hz with 1Hz step programmable |
| Level: | From 0 to 150 Vrms with 1 Vrms step programmable |
| On/off time: |
0 to 20 second with 1sec. step programmable It will step the Bell ring output automatically while the hook is off. The time delay of cut off is 50 ms. |
| Loop indication: | LED lamp DTMF dial signaling for TAD testing |
| Line Simulation | ¡@ |
| 0 to 7Km 1Km step programmable. | |
| QC limits and parameters presetting procedure | |
| Mode: | menu driven programming and auto-programming with known-good telephone set. |
| Pass and sounding system: |
It will announce short sound during individual test mode and pass indication on LCD display after pass all test. |
| DISPLAY | ¡@ |
| Back lighted 16 x 2digits LCD display and Moving coil meter with ring voltage, loop current, line voltage and signal level scale. | |
| Overload: |
the meter and instrument is fully protected. |
| POWER REQUIREMENTS | |
| Mains: | 240V or 120V selectable. |
| Power: | Approx. 30VA |
| Fuse: | Rear panel 1A |
| Weight: | Approx. 6kg |
| Size: | 340W x 130H x 380D (mm) |
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