Paradise P300 Async ESC Connector, RX Constellation Monitor Port, Differential Station Clock

ASYNC ESC CONNECTOR

This connector carries:

An RS232/RS422/RS485 async port for use on either the ESC or Aux channels An RS232 serial port for log printing & embedded M&C update

An RS422 Station Clock input

The Receive constellation monitor points (if the Monitor/AGC option is fitted)

RS232	RS422/
	RS485
2	2 (a)
-	9 (b)
3	3 (a)
-	10 (b)
1	1

RS232

12

5

13

Analog

14

7

15

13

RS422

4

11

13

ASYNC ESC CONNECTOR

Async port for ESC or Aux channel

Async ESC/Aux Input (to satellite)

Async ESC/Aux Input (to satellite)

Async ESC/Aux Output (from satellite)

Async ESC/Aux Output (from satellite)

Ground

Serial port for Log printing or embedded M&C update

Serial Input (RS232 port)

Serial Output (RS232 port)

Ground

Rx constellation monitor (Rx signal quality)

Rx I channel eye

Rx Q channel eye

Rx symbol clock

Ground

Differential Station Clock Input

Station Clock (a)

Station Clock (b)

Ground

RX CONSTELLATION MONITOR PORT.

If the Monitor/AGC option is fitted it is possible to view a receive constellation (but not the more traditional `eye pattern`). To display the receive constellation on an oscilloscope, connect the I and Q signals to the main X/Y inputs, and apply the receive symbol clock to the external trigger input of the 'scope. The main 'scope inputs should be set to X/Y display, AC oupled,c both channels on 200 mV/div, with the trigger from the external trigger input. See `STANDARD LEAD` on the following page.

DIFFERENTIAL STATION CLOCK
This provides a RS422 compatible station clock in addition to the unbalanced 75		station clock BNC
connector. See the menu dialogue in section 6.7.4 on page 89 For a full description of this port.
P300H	P300 Series Modem Installation and Operating HandbookS	Page 183