Model 3540 Network Emulator and Tester for USB
| Product Overview: The Rochelle Model 3540 is a portable USB-based telephone network emulator and tester for next generation telephony applications. This platform can effectively capture and reproduce telephone network conditions and impairments that impact voice quality. The Model 3540 features two channels, each independently configurable as a CO line (FXS) or telephone terminal (FXO). The combination of a DSP subsystem and a Windows PC audio processor, allows the generation and measurement of virtually any network tone, FSK modem, noise, and voice signals. The 3540 is easily configured and controlled through a Windows (98SE/ME/2000/XP) software application. A powerful scripting language and an optional DLL can be used for automated operation in custom test applications. The Model 3540 is ideal for the emulation and testing of modern CPE, including smart phones, Integrated Access Devices (IADs), Interactive Voice Responsive (IVR) systems, and modems. It is also well-suited for monitoring and reproducing voice service problems, in particular those associated with CPE performance.
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| Advance Specifications 3540 | |
| CENTRAL OFFICE SIMULATION / FXS (CHANNEL A, B, OR BOTH) | |
| Line Type | Two-Wire, Loop Start (Ground Start Optional) |
| Source AC Impedance | Selectable 600 Ohms, or 270 Ohms + (750 . //150nF) |
| CO Voltage and Line Current | Programmable -15 to -50 VDC, Current Limited to 30 mA |
| Ringing Voltage | 5 to 100 Hz, 10 to 100 VAC RMS (+/-2 V) |
| Idle Channel Noise | < 9dBrnC |
| TERMINAL EQUIPMENT INTERFACE / FXO (CHANNEL A, B, OR BOTH) | |
| Type | Two-Wire, Loop Start DAA, FCC Part 68 and CTR 21 |
| Bridge Mode | > 6 Megaohms (for Caller ID and Audio Monitoring) |
| 2 to 4 Wire Hybrid | Optimized for 600 Ohm impedance |
| Signaling | DTMF / Pulse |
| Distortion | -75 dB typical @ 1 kHz |
| FSK SIGNAL GENERATION AND DETECTION | |
| FSK Modem Standards | Bell 202 and ITU V.23 in Simplex of Half-Duplex Modes |
| Level Resolution and Accuracy | -55 to +10 dBm in 0.1 dB steps (+/- 1 dB) |
| FSK Receiver Sensitivity | -40 dBm with SNR > 14 dB |
| NOISE GENERATION | |
| Type | Flat (>20 KHz), Pseudo-Random |
| Range | 20 to 100 dBrnC in 0.5 dB Steps |
| TONE GENERATION | |
| Frequency Range |
4
Generators Programmable from 10 Hz to 10 kHz (+/-1 Hz) 1 Generator Programmable form 10 Hz to 25 kHz (+/-2 Hz) |
| Dynamic Range and Accuracy | -55 to +10 dBm in 0.5 dB Steps (+/-1 dB) |
| Duration | Programmable from 1 to 64,000 mS |
| USB DIGITAL AUDIO PROCESSOR | |
| Type | Full-Duplex Stereo Record and Playback |
| Frequency Characteristics | Flat, 20 Hz - 10 kHz (+/-0.5 dB) |
| Audio Formats | 8, 11, 16, 22, 44.1, and 48 kHz Sampling Rate, 8-or 16-Bit PCM |
| Total Harmonic Distortion | -85 dB typical at 1 kHz |
| Audio Record Sourves |
Left:
Channel A RX, TX, or High Impedance (Bridge) Right: Channel B RX, TX, or High Impedance (Bridge) |
| Audio Playback |
Left:
Channel A TX and/or Monitor Speaker Right: Channel B TX and/or Monitor Speaker |
| MEASUREMENT SUBSYSTEM | |
| Line and Sigmal Measurements | DC and AC (RMS) Meters using 16-Bit ADC and 14-Bit CODEC |
| Voice Level | Active Speech Level Meter, According to ITU P.56 |
| Noise Meter Filters |
C-Message, 3.4 kHz Flat, and D Filters with 1010Hz Notch Option, According to IEEE Standard 743-1995 (+/-1 dB Accuracy) |
| INTERFACE TO HOST PC | |
| Type | Full-Speed (12 MHz) Peripheral, Compatible with USB Version 1.1 |
| Classification | Internal 4-Channel Hub with a USB Digital Audio Controller and Two USB Serial UARTs |
| MECHANICAL | |
| Size and Weight | 25 x 7 x 33 cm - 4.5 Kgs. |
| Operating Temperature | 0¢XC to 50¢XC |
| Power | 100 - 240 VAC, 50-60 Hz, 1.5A Max. |
