B&K 4070A - Manual (Page 43)

BK Precision 4070A User Manual Rev.2.2
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NOTE: For more information on the Hexadecimal format, please refer to the User’s Manual chapter on
Hexadecimal Format.
Triggering the Trans mission
The Data Modulation mode starts by setting the output frequency to 0 Hz and awaiting a trigger condition.
When a trigger condition occurs, the unit will turn on the carrier and modulate the carrier until all bits have been
sent out. After the message has been transmitted, the 4070A will turn off the carrier and await another trigger event.
The 4070A will simultaneously accept a trigger from these three sources:
1. Pressing the Trigger key
2. Applying a low-to-high transition on the Ext Trig In connector
3. Sending an ASCII "T" to the RS-232 port
Saving the Message
You may save the downloaded message by saving the instrument setup using the STORE/RECALL button. Up to
10 instrument setups (including 10 messages) may be stored. Modulation data messages are only saved when the
unit setup is stored in Internal FSK mode.