Applications

The 23WT25 modem is designed to operate on remote control lines with the RTU560.

However, it can also be connected to other data terminal equipment because it operates on an interface similar to a general purpose FSK modem in the voice band.

Because it www.cniacs.com operates on an interface similar to a general-purpose FSK modem in the voice band

range (300-3400 Hz) of a general-purpose FSK modem.

The 23WT25 modem can be assigned a two-wire or four-wire line with communication channels from 50 baud to 2400 baud (24 channels at 50 baud).

Baud (24 channels of 50 baud, 12 channels of 100 baud, 6 channels of 200 baud, 2 channels of 600 baud).

(12 100 baud channels, 6 200 baud channels, 2 600 baud channels, 1 1200 baud channel).

The modem 23WT25 is available in two versions (rubrics):

– R0001: 5 VDC power supply

– R0002: 24 VDC power supply

Features

The 23WT25 modem enables high-resistance interleaving on multidivision lines. No special additional provisions are required for duplex and half-duplex operation.

such as butterfly connections based on channel assignment and the selected two-wire or four-wire line. It is designed for the transmission characteristics of local cable lines.

Light-emitting diodes indicate the most important operating states, and disconnect test sockets on the front panel make it easy to test and measure VFT channels as well as Data Terminal Equipment (DTE) interface signals.

In the RTU560 subrack, the modem board occupies one slot. The modems are available in two different sizes for two different supply voltages.

In the RTU560 subrack, it is powered by 24 V DC (R0002). the R0002 (24 V DC) can also be used with a 24 V supply voltage with a voltage tolerance of ± 20 %.

Therefore, it can also be used outside the RTU 560. If only 5 V DC is available, the R0001 standard is used.

The digital signal processor (DSP) is responsible for converting binary information into speech bands and vice versa.

Among other things, its high processing power enables highly selective channel filtering (90 dB) and thus unlimited channel assignment.