Description

The UDS V.3225 is a high-speed data modem fully compatible with the V.32 specification and capable of throughput rates up to 19,200 bps. The V.3225 modem card 62095137, stand alone 62095136, RM16M V.3225 V.3225DC modem 62095156 transmits both synchronous and asynchronous data full duplex over both dial-up and leased lines.

Fully compatible with the CCITT V.32 specification
Maximum throughput rate of 19,200 bps using
MNP Level 5 data compression and error control
Automatically adjusts data rate to
9600, 4800, 2400, 1200 or 300 bps
(CCITT V.32, V.22bis and Bell 103)
Operates full duplex over dial-up lines or
2-wire or 4-wire leased lines in synchronous
or asynchronous mode Tolerates high line noise using trellis-coded modulation at 9600 bps
Automatic dial back-up for dedicated lines
Automatic dial and
answer- Hayes-‘ compatible “AT” command set
Easy-to-use LCD display for set-up and operation

Description

The UDS V.3225 is a high-speed modem ideally suited for applications requiring high data throughput and failure free operation. The modem adheres to both the CCITT V.32 standard for data transmissions up to 9600 bps (bits per second) and to the MNP Levels 2 through 5 specifications for error control and data compression. The V.3225 has a maximum throughput rate of 19,200 bps with outstanding data integrity.

The V.3225 transmits full duplex, synchronous or asynchronous data at 9600, 4800, 2400 or 1200 bps and asynchronous data at 300 bps. An intelligent modem, the device automatically adjusts the data rate and modulation scheme to match the remote V.32, V.22bis or Bell 103 modem with which data is being exchanged.

For reliable performance, the V.3225’s advanced microprocessor design incorporates near- and far-end echo canceling, automatic adaptive line equalizing and trellis coding techniques. The V.3225 includes auto dial and auto answer features for convenient, easy use. The auto dialer is compatible with the industry standard Hayes “AT” command set. Dial back-up from leased line to dial line is included to allow the unit to operate in the event of a leased line failure.

Integral diagnostics aid the user in isolating communication faults to the data communications equipment, data terminal equipment or the phone line. For easy setup and for determining the status of modem operation, the V.3225 data modem features a 2-line by 16-character liquid crystal display with three control pushbuttons and six LED indicators.

The V.3225 is both a standalone unit (shown) or a plug-in card for use in the Universal Data Shelf- enclosure.

Test Features

• Analog Loop-back
• Analog Loop-back with Test Pattern
• Local Digital Loop-back
• Remote Digital Loop-back
• Remote Digital Loop-back with Test Pattern
• Test Pattern Generation/Checking

V.3225 Data Modem Specifications

Data Rates:
CCITT V.32 compatible 9600 or 4800 bps; CCITT V.22bis compatible 2400 or 1200 bps; Bell 103J compatible 300 bps; (4-wire V.32 mode only)
Operation:
Full duplex over 2-wire dial-up or 2- or 4-wire leased lines
Modulation:
QAM (9600, 4800 and 2400 bps); Trellis (9600 bps); PSK (CCITT V.22 1200 bps); FSK (Bell 300 bps)
Carrier Frequency:
1800 Hz, CCITT V.32; 1200 Hz Originate, 2400 Hz Answer, CCITT V.22bis
Transmitter Output Levels:
Programmable 0 to -15 dBm in 1 dBm increments for leased line. An external programming resistor option may be selected for dial-up.
Carrier Detect Level:
Dynamic
Line Equalization:
Automatic Adaptive
Timing:
Internal, external or receive
Internal Transmit Clock Frequency:
Selected bit rate ±0.01 %
Testing:
V.54 Remote Loop-back control, 511 PN Pattern (per V.52)
Environmental:
0 to 50C, 95% relative humidity, non-condensing
Mechanical:
Width: 7.0 in., Height: 2.5 in., Depth: 9.6 in.
Power Requirements:
115 VAC ±1 0%, 47-63 Hz, 10 Watts, maximum
Certification: Appropriate FCC and DOC certifications in place or pending. UL and CSA certifications in place or pending where applicable.

Easy-to-use controls and indicators For easy set-up and use, the UDS V.3225 can be completely programmed using three front panel keys and a liquid crystal display. Pressing the keys as prompted by the menu programs all modem parameters including strap options. The display is also used for system status, keeping the user informed on call status and modem operations.

Controls:

Yes:
Push “Yes” to answer affirmatively to questions on the LCD
No:
Push “No” to answer negatively to questions on the LCD.
Talk/Data:
Push “Talk/Data” to end the programming sequence and to determine whether the telephone line is to be connected to the telset or to the modem.
Indicators

QM (Quality Monitor):
On when the signal quality of the modem has diminished. QM is only indicated when the probable bit error rate (BER) is greater than 1 X 10-1.
CS (Clear to Send):
On when the DCE (Data Communications Equipment -the modem) is ready to accept data from the terminal (DTE).
RS (Request to Send):
On when the DTE (Data Terminal Equipment – PC or terminal) provides a request to send signal
CD (Carrier Detect):
On when the received audio signal is detected.
RD (Receive Data):
On when the modem is receiving data. The RD indicator is on for a space (off for a mark) at the receive data output activity.
TD (Transmit Data):
On when the modem is transmitting data. TD is on for a space (off for a mark) at the transmit data input, to indicate transmit input data activity.
RM16M V3225 modem card – 62095137
V3225 modem stand alone – 62095136
V3225DC modem stand alone – 62095156