Agilent Technologies 8935 Series Uživatelský manuál stáhnout pdf (Strana 173)

Chapter 6 173

Advanced Operations

HP-IB Service Requests

Example BASIC Program to Set Up and Service an

SRQ Interrupt

The following Agilent Technologies Instrument BASIC (IBASIC)

program was written for an HP 9000 Series 300 Controller and a Test

Set. The program assumes that the Test Set is the only instrument on

the bus. The program sets up an interrupt from the Standard Event

Status Register Group, the Calibration Status Register Group, and the

Hardware Status Register #1 Group. For demonstration purposes the

program is written to stay in a dummy loop waiting for an interrupt

from the Test Set

Example 6-108 Example

10 OPTION BASE 1

20 COM/Io_names/INTEGER Inst_address,Std_event_reg,Calibration_reg

30 COM /Io_names/ INTEGER Hardware1_reg,Srq_enab_reg,Status_byte,Event_reg

40 !

50 ! Define instrument address

60 Inst_address=714

70 !

80 PRINTER IS CRT

90 CLEAR SCREEN

100 !

110 ! Reset the Test Set to bring it to a known state

120 OUTPUT Inst_address;"*RST"

130 !

140 ! Clear the Test Set status reporting system

150 OUTPUT Inst_address;"*CLS"

160 !

170 ! Set up the desired interrupt conditions in the Test Set:

180 !

190 ! 1) Standard Event Status Register Group

200 ! Event register conditions which will set the Summary Message

210 ! TRUE if they occur:

220 ! Bit 5: Command Error decimal value = 2^5 = 32

230 ! Bit 4: Execution Error decimal value = 2^4 = 16

240 ! Bit 3: Device Dependent Error decimal value = 2^3 = 8

250 ! Bit 2: Query Error decimal value = 2^2 = 4

260 !

270 Std_event_reg=32+16+8+4

280 !

290 ! Set up the Standard Event Status Enable Register to generate the

300 ! Summary Message

310 !

320 OUTPUT Inst_address;"*ESE";Std_event_reg

330 !

340 ! 2) Calibration Status Register Group

350 ! Condition register conditions which will set the Summary Message

360 ! TRUE if they occur:

370 ! Bit 4: TX Auto-zero failed decimal value = 2^4 = 16

380 ! Bit 3: Voltmeter Self-cal failed decimal value = 2^3 = 8

390 ! Bit 2: Counter Self-cal failed decimal value = 2^2 = 4

400 ! Bit 1: Sampler Self_cal failed decimal value = 2^1 = 2

410 ! Bit 0: Spec Anal Self-cal failed decimal value = 2^0 = 1

420 !

430 Calibration_reg=16+8+4+2+1

440 !

450 ! Set the Transition Filters to allow only positive transitions in

460 ! the assigned condition(s) to pass to the Event Register

1 2 ... 168 169 170 171 172 173 174 175 176 177 178 ... 328 329

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