East Coast Datacom UDC-RDS Operation manual - page 5
Located adjacent to the IEC Power receptacle are the DATA INTERFACE PORTS. The
ports are metal stamped PORT A and PORT B. The data interface modules plug into the
UDC-RDS main printed circuit board through these openings. The top two screws on the
interface module hold the card into place. The front panel Port A and Port B indicators flash
in union with Port A and Port B data interfaces.
2.5 CLOCKING
The UDC-RDS allows clock rates from 300bps to 1.024Mbps. The unit has 32 selectable
clock rates.
2.6 DATA INTERFACES
The UDC-RDS has a host of available DATA INTERFACES comprised of RS-232, V.35,
RS-422/449, RS-530, X.21 and TTL. Each interface module is available in a DCE
configuration, the true EIA or ITU recommended connector and female gender is provided.
The V.35 interface modules are MR-34 male, with factory optional DB-25 female. This
option can reduce cabling costs.
2.7
EXTERNAL CLOCK REFERENCE
Consult Factory
Located on the back or rear of the product you will find an IEC POWER RECEPTACLE.
The supplied power cord plugs into this receptacle. This receptacle also contains a fuse
drawer. Two (2) fuses are located in this compartment. For 110 VAC +/- 10% operation the
unit is equipped with slow blow 160ma Fuses. For 220 VAC +/- 10% operation the unit is
equipped with slow blow 80ma Fuses.
2.4 REAR PANEL DATA INTERFACE PORTS
The UDC-RDS has three(3) dip switches. The switches are marked SW1, SW2 and SW5.
Switch SW1 allows the user to set the Clock Rate(s).Switches SW2 and SW5 allow the
user to Invert the Clock and force control Signals.
2.3 REAR PANEL POWER CONNECTOR
A Green LED marked PWR illuminates when AC Power has been applied. Two adjacent
sets of Green LEDs, one for PORT A and another for PORT B, illuminate in union with
individual port control signal activity. Both Port A and Port B indicators flash in union with
Port A and Port B data interfaces(see section 2.4 Data Interfaces).
2.2 INTERNAL SWITCHES
CHAPTER 2 - PRODUCT OVERVIEW
2.1 FRONT PANEL INDICATORS
UDC-RDS INSTALLATION AND OPERATIONS MANUAL
Page 2