7
SHM-768K
1. Specifications
1.1 Analog Interface
Line Type
—Unloaded 4W twisted pair 19 to 26 gauge
Range
—Refer to Table 1-1
Level
—Strap-selectable to 0 dBm or -6 dBm
Impedance
—120
Ω
Return Loss
—Greater than 15 dB
Carrier
—Controlled by RTS or constantly ON
Modulation
—Conditioned diphase Eurocom Std. D1
Connector
—Terminal block
1.2 Digital Interface
Type
—RS-530, RS-422/V.36, V.35, X.21
Baud Rates
—Strap-selectable to: 128, 256, 384, 512, or 768 kbps
RTS/CTS Delay
—0 msec
Connectors
—ME280A-35, ME280C-35: (1) 34-pin female; ME280A-36,
ME280A-530, ME280C-530: (1) DB25 female; ME280A-X21,
ME280AE-X21: (1) DB15 female
1.3 Test Switches/Diagnostics (Comply with the V.54 Standard)
Digital Loopback
—Local (DIG), activated by a manual switch, Remote
(REM), activated by a manual switch or by the DTE interface connector
signal
Analog Loopback
—Local (ANA), activated by a manual switch or by the
DTE interface signal
Teat Pattern
—Activated by a manual switch (PATT)
