OPTOGAMA LPA-A v2 Series, Руководство пользователя

Страница: 7 / 18

3.5. Controller
3.5.1. Interfaces, pinout
1. There are two contacts:
691382000005 for communication;
691382000002 for Power supply - DC 12 V
Fig 3 . Side view of LPA-A.
3.6. Voltage levels
The RS-232 standard defines the voltage levels that
correspond to logical one and logical zero levels for the data
transmission and the control signal lines. Valid signals are
either in the range of +3 to +15 volts or the range
− 3 to − 15
volts with respect to the "Common Ground" (GND) pin;
consequently, the range between
− 3 to +3 volts is not a
valid RS-232 level. For data transmission lines (TxD, RxD),
logic one is defined as a negative voltage, the signal
condition is called "mark". Logic zero is positive and the
signal condition is termed "space".
LPA-A operates on signal levels of ±5 V and can accept
signal levels of up to ±15 V. Because the voltage levels are
higher than logic levels typically used by integrated circuits,
special intervening driver circuits are required to translate
logic levels. These also protect the device's internal circuitry
from short circuits or transients that may appear on the
RS-232 interface and provide sufficient current to comply
with the slew rate requirements for data transmission.
3.7. What’s in the box?
Standard kit includes:
1. Integrated motorised laser power attenuator
2. Software
3. Power supply DC 12V
4. USB (1.5 m) cable
NOTE: Other accessories must be purchased separately.
3.8. Available accessories
Type Contact Connector
Communication 691382000005 691381000005
Power supply
691382000002 691381000002
1 2 3 4 5 1 2
DC 12V
RS232, USB
PINOUT
DC 12 V RS232 USB
1. +12 V DC 3. GND 1. USB D-
2. GND 4. RS232 RX 2. USB D+
5. RS232 TX 3. GND
Beam dump (<6W):
(with AR/AR coated window)
for all standard wavelengths
• 1064, 1030
• 532, 515
• 343, 355
• 247, 266
RS232 cable:
• 1.8 m
• 5 m
• 10 m
• 15 m
7