Connecting A Personal Computer; Rs-232C Interface - Sony LT20 Series Instruction Manual

8-3. Connecting a personal computer

Use a DZ252 or DZ253A RS-232C cable (sold seperately)
for connecting personal computers.
(See P71 "8-7. Commands".)
Note
The shielded cables of the DZ252 and DZ253A connectors are connected
to FG of LT20.
The DZ252 and DZ253A connectors for the personal computer side are 9 and
25-pin Dsub connectors, respectively. Please check the form of the personal
computer's RS-232C connector before purchasing the cable for
connection. For further information please consult your dealer.
Connection
Pin No. Pin No.
1 1
2 2
3
3
4
4
5 5
6 6
7
7
8 8
9
Case
Shield
Case
8pin mini DIN
cable
9pin Dsub
Personal
LT20 side
computer side
DZ252
Pin No. Pin No.
1 1
2
2
3 3
4 4
5 5
6 6
7
7
8
to
Case
25
8pin mini DIN
Shield
Case
cable
25pin Dsub
Personal
LT20 side
computer side
DZ253A

8-4. RS-232C Interface

1. Signals (Conforming to EIA-RS-232C)
Signals : Asynchronous, start-stop system,
full duplex system
Data signalling rate : 600, 1200, 2400, 4000, 9600,
19200 bps
Data length : Switchable between 7 or 8 bits
Stop bits : Switchable between 1 or 2 stop bits
Cable length : Max.15 m
Parity : None, odd, or even selectable.
• Switching of the various parameters is performed in
the initial settings (P54).
• The above underlined items are the settings at the
time of shipping.
2. Electrical Specifications
Driver side : Using MAX232 or equivalent
product
Amplitude of output voltage : ±5 to 10 V
: 300 Ω or more
Output resistance
Output short-circuit current : ±10 mA
Receiver side : Using MAX232 or equivalent
product
Input resistance : 3 to 7 kΩ
Input allowable voltage : ±30 V
Input threshold : Low 1.2 V/High 1.7 V
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