
07/13/06
Caution! Do not attempt to use surface-mount oscillators with this board. Excessively noisy or poor quality
operation may result. If DIL packaged oscillators are not available, surface-mount oscillators should be mounted on
a surface-mount-to-DIL adapter that can be plugged (or soldered) into the board.
Manufacturers and oscillator types that have been tested in the SD130ASM are:
Connor-Winfield: HC15R8-27MHz, HC15R8-36MHz, AC51-74.25MHz, AC51-74.176MHz
Epson Electronics: SG-531PTJ-27.000MC, SG-531PTJ-36.000MC
When using BIST or TPG mode, control register 0Dh must be loaded with the code for the test pattern desired and
the TPG Enable bit must be set either by way of the control register bit or the Multi-function I/O port. See
LMH0030 datasheet for complete details.
DC Power Supply and Wiring—
It is strongly recommended that the power supply used to power this assembly have both voltage and current
limit setting capability. It should also have a DC output ON/OFF switch and DC output metering. A supply
such as the Agilent E3632A meets these requirements.
Attach suitable gauge wiring (#18 or 16AWG suggested) and connectors for supplying the regulated 7.5V to
9.0V±5% main power to the SD130ASM. Use of 0.25” spade type terminals is recommended. A crowbar diode is
provided to reduce possible damage to the SD130ASM in the event that main supply polarity is reversed when
connecting the SD130ASM to the power supply. In addition, the automotive-type regulators used in this design
provide additional fault protection. It is suggested that the power supply current limiting be set to 500mA.
RS-232 Command Port Communications —
The SD130ASM is supplied with the RS-232 port configured to operate with standard IBM-PC/AT 9-pin serial
ports. PC serial ports are configured as DTE. The SD130ASM is therefore configured as DCE (like a modem, for
example). A suitable 9-pin serial port extension or modem cable may be used to connect the SD130ASM to the PC.
Other control devices such as dumb terminals may also be used to communicate with the SD130ASM. Consult the
equipment manual for the required communication settings as DTE or DCE. Dumb terminals are commonly DTE.
The port uses RS-232 standard levels for input and output. 9600 baud, 8 data bits, 1 stop bit, odd parity, no flow
control. Set the terminal or terminal emulator program to append a line feed after received carriage return characters.
Turn off local echo on terminal or terminal emulator program (The “Hyperterminal” program is recommended).
Serial Data Outputs —
Attach the SD130ASM serial data outputs to external test and other equipment using suitable 75Ωcoaxial cables.
Terminate unused output in 75Ω. A Kings termination, part number 2555-3-32 (75Ω), is recommended for HD use.
Parallel Video, Clock, Ancilliary/Control Data and User Bus Inputs and Outputs —
Double-row pin (or socket) connectors may be installed at positions provided for P1 through P4. Connectors may be
installed either on the top or bottom side of the SD130ASM. These connectors together with suitable cabling
provide access to all necessary data inputs and outputs of the LMH0030. Consult the LMH0030 datasheet for details
of these inputs and outputs. Cable lengths should be as short as possible to minimize signal degradation due to
reflections and noise. Each input terminal is paired with a ground terminal. When ribbon or similar cable is used to
carry signals to or from the SD130ASM, signal conductors are automatically paired with a ground conductor. Due to
the wide variation of possible cabling schemes that may be used with the SD130ASM, termination resistors are not
installed. It is recommended that series termination of the proper value for the cable impedance used be employed at
the source end of the cable supplying signals to the SD130ASM. For example: The series termination value for
ribbon cable is 100 to 120Ω. The series termination for 50Ωcoaxial cable is 47 to 51Ω. For 75Ωcoax, the value is
75Ω.
NOTE: P4 serves as both the control port and ancilliary data port connection. The COP8 controller places its
outputs in tri-state when not communicating with the LMH0030. External equipment used to interface to the
Operating Instructions SD130ASM Rev. G
Page 2 of 4
Downloaded from Elcodis.com electronic components distributor