7-29
(10) Power meter (zero point calibration)
<Example 2.10> Zero point calibration of power meter
1) Project file: SMPL210.MAK
1 FORM21Ø.FRM
2 INITØØ1.BAS Uses the code file of the initialization mod-
ule in paragraph 7.2.2.
3 RESPØ1.BAS Uses the code file of the response reading
module described in paragraph 7.2.1 (2).
4 SETTX.BAS This is the code file of the parameter set-
ting module for TX measurement in para-
graph 7.2.3 (1).
5 SGOUT.BAS Uses the code file of the SG output control
module described in paragraph 7.2.1 (2).
6 ZEROSET.BAS This is the code file for the zero point cali-
bration module.
7 VBIB.BAS
8 NIGLOBAL.BAS
9 ProjWinSize=87,394,243,136
10 ProjWinShow=2
2) Form file: FORM210.FRM
The following procedures are added and described.
1 Sub Form_click ()
2 Call initial_gpib' Calls GPIB initialization routine.
3 Call Set_TX_parameter'
Calls TX parameter setting routine.
4 Call zero_set' Calls zero point calibration routine.
5 End Sub
3) Code module file: ZEROSET.BAS
1 '----------------------------
2 ' MT88Ø1C GPIB Sample Program
3 ' Power meter (zero set)
4 '----------------------------
5'
6'
7'
8 Sub zero_set ()
9 Dim sbuf As String * 4Ø
1Ø Dim Stat%, I%
11 '
12 Call SG_out(Ø)' Sets the SG output to off.
7.2 Sample Program (Example of Program Using Visual Basic)