Starrett 2900 Series, User Manual

Page: 14 / 176

14 PKG08803-UM2900
ENGLISH
Pin 2
Pin 1
Pin 4
Pin 3
SERIAL OUTPUT CONNECTOR
Pin 1 GND signal return
Pin 2
Serial Receive Data Input (RX/RQST)
Pin 3 Serial Transmit Data Output (TX/DATA)
Pin 4
Remote Zero – Special Order Only
State Change High to Low
SERIAL INPUT VOLTAGE LEVEL SPECIFICATION
Logic "0" Vin < 1.30 Volts
Logic "1" Vin > 1.98 Volts
SERIAL OUTPUT VOLTAGE LEVEL SPECIFICATION
MINIMUM MAXIMUM
Low Level Vss Vss + 0.25 @ -1.5mA Load
High Level Vdd – 0.25 @ 1.25 mA Load Vdd
Note: Vss = 0 Volts, Vdd = 2.7 to 3.6 Volts
ENVIRONMENTAL CONSIDERATION
Temperature 10-30 °C,
Humidity 30-85%RH (no condensation)
Atmosphere Non-corrosive, Nonflammable
IP67 RATING (INGRESS PROTECTION RATING)*
6 Dust Tight No ingress of dust, complete protection against contact
7 Immersion up to 1m Up to 1m of submersion for up to 30 minutes
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.