Modems
MOT202T
ÒBorn-AgainÓ UDS/Motorola 202T
▲2-wire half duplex or 4-wire full duplex private line operation
▲0 to 1200 bps data rate over unconditional lines and 1800 over high quality lines
▲Anti-streaming
▲Phase coherent, frequency shift keyed (FSK) modulation
▲LED indicators
▲Front panel rotary switch function selector
▲Integral test features
▲12, 24, 48, 125VDC Power (Rack)
▲115VAC, 60Hz - 220/240VAC 50 Hz power (Standalone)
Introducing the latest addition to the Telenetics¨ family of industrial grade, temperature hardened modems, the MOT202T is a pin-for-pin, form, fit and function replacement for the Motorola/UDS Model RM16M202T.
A must for industrial applications, the MOT202T (Standalone) features built-in diagnostic, anti- streaming, multi-power inputs (115 to 240AC, 12 to 125VDC) and -40¼C to +80¼C operating range capabilities.
The modem operates over leased or dedicated, loaded or unloaded lines equal to or better than the ITU (formerly CCITT) M.1020/1025 or the BELL 3002 leased line services. It operates over point-to-point or multi-point polled systems and operates in full or half-duplex over 4-wire or 2-wire circuits.
The modem employs circuitry to prevent data and carrier detect errors over noisy lines. In multi-drop systems it is very common to have noise spikes and other harmful high frequency components caused by carrier turn-offs from other modems on the same line. The modem uses a combination of soft-carrier generation and soft-carrier detection in conjunction with a signal to noise ratio (SNR) detector to eliminate errors caused by line noise.
The MOT202TÕs anti-streaming capability prevents a modem from remaining in the transmit mode when the modem is not actively transmitting date. In addition, the MOT202T allows users to verify transmitted and received data via the diagnostic feature.
The MOT202T interchangeable design between the Universal Data Shelf multiple modem enclosure (RM16M series) and the standalone modem enclosure, enables the modem to be directly inserted in the Universal Data Shelf when the optional front panel is attached. Thus, data-communications facility can easily upgrade from front multiple standalone enclosures to a centralized rack without the expense and trouble of purchasing new modems.
