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Interface converter PCM64

Discontinued, recommended replacement is: PCM64/M


PCM64 Features:
  • Maximum line attenuation - 10 dB
  • G.703.1 64 kbps line interface
  • Full duplex mode
  • Digital interface V.35/RS-530/RS-449/RS-232/X.21
  • Data rate doubling capabilities
  • Digital, local, and remote loopbacks
  • Integrated BER tester
  • Two DTE emulation modes
  • Alarm interface ("dry" relay contacts)
  • Built-in AC/DC power unit
  • Declaration of compliance D-MDPD-8905

PCM64 converter is used to convert G.703.1 64 kbps interface signals into synchronous DTE digital interfaces. The converter can be employed to build a duplex data link using digital trunking equipment.

It allows to connect PCs, routers, terminals, etc. to digital trunking equipment with co-directional 64 kbps interface (G.703.1).

Built-in sync/async converter provides connection of various devices to asynchronous ports. Integrated BER tester and remote loopback capabilities allow to test the whole link from a local unit. The capability of enabling external receive and transmit clocks allows to select one of the two DTE emulation modes when you connect the converter to DCE.

PCM64 converter provides double line rate (128 kbps).


Digital interface
Data rate Async 115, 57.6, 38.4, 19.2, 9.6, 4.8, 2.4, 1.2, 0.6 or less kbps
Sync 64 or 128 kbps
Timing signals TXC, RXC, ETC, ERC
Modem signals DTR, DSR, CTS, RTS, CD
G.703.1 interface (64 kbps)
Connector removable terminal block
Line coding G.703.1
Line impedance 120 Ohm symmetrical (twisted pair)
Receive signal level 0 to -10 dB
Transmit path synchronization from internal clock generator (INT)
from receive path (RCV)
from digital interface (EXT)
Alarm interface
Connector Female Mini-DIN, 6 pins
Relay contacts current max. 250 mA
Relay contacts voltage max. 175V DC
Diagnostics modes
Loopbacks Digital (via digital interface)
Local (via G.703 line at a local unit)
Remote (via G.703 line at a remote unit)
Bit error rate tester Enabled using front panel button


Some of the documents are in Adobe® Acrobat® Reader® format

PDF  User's Manual, in Russian
PDF  User's Manual, in English
PDF Справочник по интерфейсным кабелям Cronyx.

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