Starrett 2900 Serie Guia Del Usuario página 14

ENGLISH
SERIAL OUTPUT CONNECTOR
Pin 1 GND signal return
Pin 2 Serial Receive Data Input (RX/RQST)
Pin 3 Serial Transmit Data Output (TX/DATA)
Remote Zero – Special Order Only
Pin 4
State Change High to Low
SERIAL INPUT VOLTAGE LEVEL SPECIFICATION
Logic "0"
Logic "1"
SERIAL OUTPUT VOLTAGE LEVEL SPECIFICATION
Low Level
High Level
Note: Vss = 0 Volts, Vdd = 2.7 to 3.6 Volts
ENVIRONMENTAL CONSIDERATION
Temperature
Humidity
Atmosphere
IP67 RATING (INGRESS PROTECTION RATING)*
6 Dust Tight
7 Immersion up to 1m
NOTE: Remember, to ensure the specified IP67 performance, the following items will
need to be intact and assembled onto the indicator.
• Spindle bellows
• Back lug with gasket
• Stem cap
• Data output cover or data cable with gasket
• Battery door with gasket
All items that have screws will need to be secured tightly.
14 PKG08803-UM2900
Vin < 1.30 Volts
Vin > 1.98 Volts
MINIMUM
Vss
Vdd – 0.25 @ 1.25 mA Load
10-30 °C,
30-85%RH (no condensation)
Non-corrosive, Nonflammable
No ingress of dust, complete protection against contact
Up to 1m of submersion for up to 30 minutes
Pin 2
Pin 1
MAXIMUM
Vss + 0.25 @ -1.5mA Load
Vdd
Pin 4
Pin 3