Radyne DM240XR Especificaciones descargar pdf (Pagina 74)

DM240XR High-Speed Digital Modulator Rear Panel Interfaces

MN-DM240XR– Revision 13 5–4

5.5 External Reference (Input)

The External Reference Input (J8) is supplied to allow the customer to phase-lock the modulator’s

internal oscillator to an external reference.

This female BNC Connector accepts a 1.5 – 5 Vp-p @ 50 Ohms. The frequency range of the

external reference is 1 – 10 MHz in 8 kHz steps.

5.6 Remote Port (I/O)

The Remote Port Interface (J4) can be used for the monitor & control functions of the unit. The

physical interface is a female 9-Pin D-Sub Connector. This bi-directional port complies with

RS-485 Electrical Specifications. Refer to Section 7.6 for protocol and programming details.

Pinouts are listed in Table 5-1.

Table 5-1. J4 - RS-485 Remote Control- 9-Pin ‘D’ Female

Pin No. Signal Description Direction

1 Tx (B) Transmit Data (+) Output

5 GND Ground ---

6 Tx (A) Transmit Data (-) Output

8 Rx (B) Receive Data (+) Input

9 Rx (A) Receive Data (-) Input

5.7 Terminal Port (I/O)

The Terminal Port Interface (J1) can be used for the monitor & control functions of the unit. The

physical interface is a female 9-Pin D-Sub Connector. This bi-directional port complies with

RS-232 Electrical Specifications. Refer to Section 4.8 for terminal interface details. The pinouts

are listed in Table 5-2.

Table 5-2. J1 - RS-232 Terminal Port - 9-Pin ‘D’ Female

Pin No. Signal Name Description Direction

3 TxD Transmit Data Output

2 RxD Receive Data Input

5 GND Ground ---

7 RTS Request to Send Output

8 CTS Clear to Send Input

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 195 196

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Radyne DM240XR Especificaciones Pagina 74