BNC 630 - Manual (Page 12)

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Figure 2.0-5: Rear panel connectors
5.
External Reference Input / Ext Arb Clock connector
This connector accepts an external sample clock for the Arbitrary Waveform Generator when the unit is in External Clock or Lock
Slave modes. The signal level on this input must be between 0V and +5V and is intended to be driven by TTL/CMOS logic. (For
more information on Arb Locking, refer to the chapter “Multiple Unit Locking.”)
This connector is also reserved for the addition of an external timebase reference option.
*** Caution *** Levels outside the 0V to +5V range on this input may damage the 630.
6.
External Arb Sync In / Out connector
This connector accepts an external synchronizing signal when the unit is in Lock Slave mode. (For more information on Arb
Locking, refer to the chapter “Multiple Unit Locking.”) The signal level on this input must be between 0V and +5V and is intended
to be driven by TTL/CMOS logic.
*** Caution *** Levels outside the 0V to +5V range on this input may damage the 630.
7.
RS232 Interface connector
This connector is used for remote operation of the 630. It is also used to download software upgrades to internal Flash memory.
To use the remote control feature, attach the serial port on a computer or terminal to the RS232 Interface connector on the rear of
the 630. On an IBM PC or compatible, the serial port is on a male 9 pin or 25 pin connector. The wiring is different for each type
of connector.
For cabling diagrams, See chapter 6 "Remote Operation."
The baud rate is factory-set to 9600 but may be changed via the front panel or RS232 port. The other serial port parameters are 1
start bit, 8 data bits, 1 stop bit, and no parity. An ASCII "hello" screen is printed to the terminal on power-up. For further
information, refer to chapter 6.
8.
Power In connector
A standard IEC power cord inserts directly into the back of the 630. The input is autoranging and may be 100-240VAC, 47-63 Hz.