6
LDM-MR19.2
1. Specifications
Compliance —
FCC Part 15 Subpart J Class A, DOC Class/MDC classe A
Cable Required —
Between ME760 units: Unloaded twisted pair, 19 to
26 gauge; 4 wires for full duplex, at least 2 wires for
half-duplex; DC continuity not required;
Between standalone ME760 unit and DTE: TIA RS-232
cable with DB25 male connector on ME760 end
Interface —
Serial EIA RS-232-D/CCITT V.24, DCE
Protocol —
Synchronous or asynchronous
Clock Source —
Either internal, external from local DTE, or recovered
from remote LDM-MR19.2
Data Format —
5, 6, 7, or 8 data bits; 1, 1.5, or 2 stop bits; even, odd, or
no parity (but see Table 3-3 on page 26)
Operation —
2– or 4-wire half-duplex or 4-wire full-duplex; point-to-
point or multipoint
Data Rate —
Sync: 1.2, 2.4, 3.6, 4.8, 7.2, 9.6, 14.4, or 19.2 Kbps;
Async: Up to 19.2 Kbps
RTS/CTS Delay —
0, 8, or 64 ms (user-selectable)
Modulation —
Differential diphase Eurocom Standard D1
Transmit Level —
0, –3, –6, or –9 dBm (user-selectable)
Transmit
Impedance —
600, 300, or 150 ohms or “LOW” (user-selectable)
Receive
Impedance —
150, 300, or 600 ohms or “HIGH” (user-selectable)
Return Loss —
Greater than 15 dB
