The Data Connect  FastPoll DSP9612 is a triple mode, full-featured 9600 QAM Fast Poll, ITU V.23 and Bell 202T leased line or private wire modem with the fastest training time in the industry: 23msec RTS/CTS delay at 9600 bps and 8 ms in Bell 202T Mode.

Ideal for utility and industrial automation multi-dropping applications, including SCADA systems, traffic automation and oil or gas automation projects, where an unlimited number of drops is desirable at ranges up to 16 miles (26 Km). The DSP9612 is a modem designed for 4-wire, full-duplex or 2-wire, half-duplex operation over a voice-band leased line or private copper wire. The modem design utilizes the latest digital-signal processing (DSP) technology to achieve high performance with an adaptive equalizer for the best operation on the poor unconditioned lines.

In FastPoll Mode (9600/4800 bps), the DSP9612 employs Data Connect ’ proprietary modulation and encoding scheme to achieve fast modem training time. In V.23 or Bell 202T Mode, the modem is also backward compatible with V.23 (0 – 1200) or Bell 202T (0 – 1800 bps) modems. Ideal for systems where fast response, short training time and low throughput delay is required, the FastPoll is optimized for fast receiver equalizer training and extremely low throughput delay.

The triple mode capability allows the DSP9612 to communicate with existing V.23 or Bell 202T remote modems at up to 1800 bps, which can then be upgraded at a later date to Data Connect  DSP9612 FastPoll standalone modems and switched to 9600 bps.

Three models are available: Rack Mount (RM) for insertion into a RM16 nest, Standalone AC/DC powered (FP) and Standalone low voltage DC powered (LV). Auto RTS is a new feature allowing multidrop for devices with 3 wire data interfaces and no control signals (no RTS signal) required.

Mechanical Specifications

RM Form Factor
Rack-Mount Modem Card for the Data Connect  and the Motorola/UDS RM16M
Universal Data Shelf.
Dimension
9” x 6.25” x 0.87”
Weight
8 oz.


LV and FP Form Factor
Aluminum and Steel case
Dimension
5.70” x 8.30” x 1.50”
(144.78 mm x 210.82 mm x 38.1 mm}
Weight
1.9 lb. (227 grams)

Diagnostic Features
Front panel L.E.D. for status monitoring:
Power (PWR)
Request to send (RTS)
Clear to send (CTS)
Transmit data (TXD)
Receive data (RXD)
Data carrier detect (DCD)
Data set ready (DSR)
Analog loopback (ALB)
Digital loopback (DLB)
Front Panel loopback
control for testing:
Local Analog Loopback (ALB)
Local Digital Loopback (DLB)
Remote Digital Loopback (RDL)
(except V.23 Mode)

Data Format
8 or 9 data bits with 1 or more stop bits
Line Requirement
TELCO Voice band 2 or 4 wire leased line.
Private metallic circuits, 26 to 19 AWG

Operating Modes
2-wire half-duplex or 4-wire full-duplex

Modulation
Data Connect  proprietary (FastPoll Mode) and
FSK (V.23 or Bell 202T Mode)

Equalizer
Automatic, adaptive in FastPoll mode,
Fixed compromise in FSK mode

Training Time
(RTS to CTS delay)
FastPoll Mode: 23 ms
V.23: 33ms
Bell 202T Mode: 8, 33, 59, 219 ms

Cable Equalizer
Fixed transmitter and receiver cable equalizer

Power Supply (by model)
DSP9612RM, powered from RM16 Rack
DSP9612LV, 10 to 53 VDC
DSP9612FP, 85 to 265 VAC or 85 to 400 VDC

Surge Protection
Provided at power line and leased line;
Up to 15KV (Standalone version)

Carrier Control
Constant or switched, DIP switch selectable
Synchronization

Loss Recovery
Built-in Train on Data for FastPoll

Transmit
Output Level
+3dbm to –14 dbm, 1 db step
(DIP switch selectable)

Receiver

Dynamic Range
+3 to -30 dbm or -10 to -43 dbm
(DIP switch selectable)

Operating Temperature
-40ºC to +85ºC