Campbell Scientific CR9000X Measurement and Control System - Manual (Page 37)

Overview
* Different pin function compared to a standard DCE device. These pins will
accommodate a connection to modem or other DCE devices via a null modem
cable.
I/O Descriptors: O = Signal Out of the CR1000 to a RS-232 device;
I = Signal Into the CR1000 from a RS-232 device,
X = Signal has no connection (floating)
CS I/O CSI 9 Pin port for communications with CSI's peripherals (such as the DSP4).
Table OV1-2 lists the pin configuration for the CR9000X CS I/O port.
TABLE C-1. CS I/O Pin Description
O = Signal Out of the CR9000X to a peripheral.
I = Signal Into the CR9000X from a peripheral.
PIN ABR I/O Description
1 5 V O 5V: Sources 5 VDC, used to power peripherals.
2 SG Signal Ground: Provides a power return for pin 1 (5V),
and is used as a reference for voltage levels.
3 RING I Ring: Raised by a peripheral to put the CR9000X in the
telecommunications mode.
4 RXD I Receive Data: Serial data transmitted by a peripheral are
received on pin 4.
5 ME O Modem Enable: Raised when the CR9000X determines
that a modem raised the ring line.
6 SDE O Synchronous Device Enable: Used to address
Synchronous Devices (SDs), and can be used as an enable
line for printers.
7 CLK/HS I/O Clock/Handshake: Used with the SDE and TXD lines to
address and transfer data to SDs. When not used as a
clock, pin 7 can be used as a handshake line (during printer
output, high enables, low disables).
8 +12 VDC
9 TXD O Transmit Data: Serial data are transmitted from the
CR9000X to peripherals on pin 9; logic low marking (0V)
logic high spacing (5V) standard asynchronous ASCII, 8
data bits, no parity, 1 start bit, 1 stop bit, 300, 1200, 2400,
4800, 9600, 19,200, 38,400, 115,200 baud (user
selectable).
Ethernet Supports 10BaseT or 100baseT communications. An Ethernet crossover
cable is required for hooking up directly to a computer.
There are two LEDs on the Ethernet port. The LED on the lower left of the
port indicates communication speed. If hooked into a 10BaseT link it will be
dark, if hooked into a 100BaseT link it will be lit green.The LED on the lower
right of the port indicates communication traffic. If communications is active,
it should be flashing yellow.
PC Card The CR9000X has a built in PCMCIA card slot that can support cards up to 2
GB in size with a status LED and control button. Removing a card while it is
active can corrupt the data and potentially damage the card. Press Card
removal button and wait for LED to turn green before removing Card. Do not
switch off the power (CR9011 Module) while the cards are present and active
OV-5