Example: scanning with external device 34, Scanning with external device, 34, With external device, 34 – HP E1367A User Manual
Page 34: Example: scanning with external device
Example: Scanning
with External Device
This example uses the HP E1300A/E1301A mainframe "Trig Out" port to
synchronize the RF multiplexer channel closures to an external
measurement device. See the figure below for typical user connections.
For measurement synchronization, the HP E1300A/E1301A Trig Out BNC
port is connected to the instrument External Trigger In port.
For this example, the HP E1300A/E1301A and the instrument are
connected via HP-IB with HP E1300A/E1301A address of 709 and
instrument address of 722. The RF multiplexer logical address is 120
(secondary address =120/8 =15). The measurements are transferred
directly to the computer. (Appropriate instrument commands must be
added to line 10.) The sequence of operation is:
1. INIT (line 50) closes channel 100.
2. The channel closure causes a trigger output from the "Trig Out" port.
3. Trigger to Ext Trig In initiates channel 100 measurement.
4. Result is sent to the computer (lines 60 to 80).
5. TRIGGER command (line 90) advances the scan to channel 101.
6. Steps 2-5 are repeated for channels 101 through 102.
10 OUTPUT 722;"TRIG EXT;..."
! Configure instrument
20 OUTPUT 70915;"OUTP ON"
! Enables "Trig Out" port
30 OUTPUT 70915;"TRIG:SOUR BUS"
! HP-IB bus triggering
40 OUTPUT 70915;"SCAN (@100;102)"
! Scan channels 00-02
50 OUTPUT 70915;"INIT"
! Enable scan
60 FOR I = 1 TO 3
! Start count loop
70 ENTER 722;A
! Enter reading
80 PRINT A
! Display reading
90 TRIGGER 70915
! Advance scan
100 NEXT I
! Increment count
110 END
Figure 4-3. Scanning with External Device
34 Understanding the HP E1366A/E1367A RF Multiplexers
Chapter 4