Sanyo DSR-300P Service Manual page 9

4-2. Overwriting the sub-firmware
4-2-1. Setting up the computer
Use the Hyper Terminal which is compatible with Windows
95 , 98 or other.
1. Installing the interface board (VZU-COM300).
2. Connect the RS-232C connector on the digital video re-
corder (VZU-COM300) with the RS-232C connector on the
computer using an interlink serial interface cable. Connect
a monitor to the MONITOR 1 output of the digital video re-
corder. Then turn on the power and start Windows 95 , 98
or other.
3. Open Windows Explorer, and then run the file \Program
Files\Accessories\Hyper Terminal.
Save the updated firmware into the computer.
4. Open Windows Explorer, and then run the file \Program
Files\Accessories\Hyper Terminal\Hypertrm.exe.
The Connection Description window appears.
5. Click the Cancel button in the Connection Description win-
dow, or enter your name and then click the OK button.
The Hyper Terminal window appears.
6. Click the File (F) button in the Hyper Terminal window, and
then click the Properties (R) button.
The Properties dialog box appears.
7. In the Properties dialog box, set Connect using (N) in Phone
Number to "Direct to COM", and then click the Configure
(F) button.
The port Setting window of the COM1 Properties dialog box
appears.
8. In the Port Settings window, change the settings to match
the controller.
Speed: 38400
Data bits: 8
Parity: None
Stop bits: 1
Flow control: Hardware
9. Click the OK button.
The Properties dialog box appears.
10. Click the OK button in the Properties window.
The Hyper Terminal window appears.
This completes the computer settings.
Wiring diagram for RS-232C interlink serial interface cable
Controller side
1
RD
2
TD
3
DTR
4
GND
5
DSR
6
RTS
7
CTS
8
9
Connection Description
Name:
Icon:
∗∗
Properties
Connect To Settings
Country code:
Area code:
Phone number:
Connect using:
Direct to Com1
Configure..
COM1 Properties
Port Settings
Bits per second:
38400
8
Data bits:
Parity: None
1
Stop bits:
Flow control:
Hardware
Advanced...
OK
Send Text File
− 9 −
PC side
1
RD
2
TD
3
DTR
4
GNG
5
DSR
6
RTS
7
CTS
8
9
? X
OK Cancel
? X
Change Icon..
OK Cancel
? X
Restore Defaults
Cancel