1-4
SM 701730-01E
CPU Board Assembly
The CPU board consists of each circuit block’s control circuit, an I/O circuit, other
peripheral circuits, and a display section (for displaying waveforms and other
information).
A Hitachi HD6417750SF is used for the CPU. The actions of each circuit block
connected to the CPU bus are controlled by the CPU.
The main memory (synchronous DRAM) and Flash memory are included in the CPU’s
peripheral circuits.
In the I/O circuit, the following circuits carry out control through the CIO (CPU I/O
interface IC). They are the backup memory, keyboard, floppy disk drive controller, GP-IB
controller, USB I/F circuit, and PC card. On the CPU bus, they are the Ethernet I/F
(option: /C10) circuit.
The display section consists of a GCP, graphic memory (synchronous GRAM), character
memory (fast SRAM), and VGA VIDEO OUT circuits. The GCP writes the waveform
data that are transferred from the AMI to the graphic memory. It synthesizes the
contents of the graphic memory and the character memory and displays them on the
TFT color LCD. The GCP also controls the built-in printer.
Key Board Assembly
Key switches, LEDs, the rotary encoder, and the jog shuttle are installed on the key
board assembly.
Mother Board Assembly
Controls the exchange of signals between the CPU, KEY, ACQ4 (or the ACQ2 for the
DL1720E), and a printer assembly. Supplies output from the power supply unit to the
CPU, KEY, ACQ4 board (or the ACQ2 board for the DL1720E) assemblies, AD4 board
(or the AD2 board for the DL1720E) assemblies, and a printer assembly. +12 V
generation takes place on this board.
LCD Board Assembly
The LCD board assembly converts the connector of the LCD signal cable.
LCD Assembly
6.4-inch color TFT LC display
Full display resolution:
640
×
480
Waveform display resolution:
500
×
384
Printer Assembly (Optional)
The printer is of a thermal sensitivity type that prints 8 dots per mm and 832 dots per
line. A hardcopy of the display is printed in approximately 12 seconds.
FDD Assembly (-J1)
The FDD assembly supports 3.5-inch floppy disks (1.44 MB formats).
PCMCIA Board Assembly (-J3)
The PCMCIA board assembly connects a Type II PC card with the CPU board.
1.2 Function of Each Assembly
