Agilent Technologies E1300B, E1301B user manual Changing Primary Gpib Address, Systcommgpibaddr

Figure 4-2. Pacer Trigger States

Changing the

Primary GPIB

Address

You can set the mainframe’s primary GPIB address to any integer value between 0 and 30. The address is set to 9 at the factory. (See Chapter 2 for instructions on setting/reading the GPIB address from the front panel.) The following command sets the mainframe’s primary GPIB address to 12.

SYST:COMM:GPIB:ADDR 12

Synchronizing

Internal and

External

Instruments

The mainframe’s Trig Out and Event In ports allow you to synchronize external equipment to instruments operating within the mainframe. The Trig Out port allows an instrument in the mainframe to output a negative-going pulse to indicate the occurrence of some event such as a multiplexer channel closure. The signal levels are standard TTL (0V to 5V). You direct the pulse from the appropriate instrument to the Trig Out port by sending the OUTP:STAT ON command to that instrument.

The Event In port allows an instrument in the mainframe to be armed or triggered from an external negative-going signal. The signal levels are standard TTL (0V to 5V). Send the ARM:SOUR:EXT command or the TRIG:SOUR:EXT command to an instrument to direct the signal on the Event In port to that instrument.

The following examples use an external Agilent 3457A Multimeter and an internal Agilent E1345A 16-Channel Multiplexer to demonstrate the use of the Trig Out and Event In ports.

Using the Mainframe 4-3