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6. Set the amplifier ’Diff +’ and ’Diff -’ output impedances.
OUTPut3:IMPedance <impedance>
OUTPut4:IMPedance <impedance>
7. Place the AFG in the wait-for-arm state.
INITiate:IMMediate
Note Resetting the amplifier sets many of the same conditions set by subsequent
(amplifier) commands in the program. These commands are included,
however, to show other parts of the amplifier configuration.
DIFF45
1 !RE-STORE"DIFF45"
2 !This program uses the E1446A to generate a 10 mVpp signal from a
3 !0.323738 Vpp signal supplied by the E1445A AFG. To accomplish this, the
4 !AFG signal is attenuated by 30 dB at the amplifier input. The output is
5 !taken from the ’Diff +’ and ’Diff - ’ outputs whose output impedances
6 !are set to 50 ohms.
7 !
10 !Assign I/O path between the computer and E1445A. As the commander of
20 !the Agilent E1446A, the E1445A sends the amplifier its commands.
30 ASSIGN @Afg TO 70910
40 COM @Afg
50 !
60 !Set up error checking
70 ON INTR 7 CALL Errmsg
80 ENABLE INTR 7;2
90 OUTPUT @Afg;"*CLS"
100 OUTPUT @Afg;"*SRE 32"
110 OUTPUT @Afg;"*ESE 60"
120 !
130 !Call the subprograms
140 Rst
150 Diffout
160 !
Continued on Next Page
Using the Differential (small signal) Outputs Programming the Agilent E1446A 2-27