extension of the address bus. for specific devices within the instrument. and U1620 along with U1720A, U1720B, U1730A. further illustrates address decoding. microprocessor by the 02 clock. reset latches, U1720A and U1720B.
function via the Address Decode circuitry. The Data Bus Buffer. buffering of instructions and data on the data bus. devices that may be malfunctioning on the Data Bus.
mal Data Bus Buffer U1435 and. the address bus in a repeatable and predictable fashion. ware problems when troubleshooting. to the Data Bus where it is read by the microprocessor. The RAM stage, U1 600 and U1 505.
bit RAM ICs and a small amount of enable logic. BA9 when ERAM is low and WE is high. enable WE is also low. constants for the DM5010. various algorithms stored in the firmware ROM. the microprocessor to calculate measurement results.
of initial instrument adjustment. constants must be written into the CMOS RAM. same way as writing to the normal RAM.
constants have been stored. CMOS RAM functions as a ROM. high through R1 133 up to the battery supply voltage. extended periods between instrument use. supply through R1135 and CR1133.
U1220, the positive supply input. the CMOS RAM flows through R1131 from battery BT1121. sor may read them when required.
dress Decode circuitry turns on buffer U1420B. these status and data bits. Wie microprocessor performs its various control functions.
environment it is operating in. is set to match the line frequency of the power source. may be used to initiate triggering. the output of U1720C is reset low.
conversion is in process. onto the bus via the Data line. buffered one bit at a time onto bit 7 of the buffered data bus. parallel format it uses most efficiently.
configuration of the DM 5010. cuitry turns on buffer U1610. data bus corresponding to the switch closures of S1515. defined by the user. in the GPIB description that follows. eration and execute a special SA stimulation routine.
der the direction of a system controller. in to the GPIB. nections that are used for three separate types of functions. vided for future use.
specifically for transfer of data between GPIB devices. tion over the interface lines. all devices listen to the controller.
source of device programming. line is used to signal the end of a multiple byte transfer. the state changes shown in Fig.
to a high level, indicating that data is not valid. accept the first data byte, the NRFD level goes high. GPIB three wire handshake state diagram. lines has settled and is valid. cepts the present data.
high, indicating that it has accepted the data. that all acceptors have accepted the data. the DIO lines must now be considered invalid.
has settled and is valid. accepts the present data. nal lines after setting DAV high. NDAC to a low level in preparation for the next cycle.
tions and two bidirectional current buffer ICs. Series power module for future use. depends on how its various internal registers have been set. processor side of the 1C. registers of the GPIB 1C to predefined states. GPIB 1C is enabled.
processor via the address bus and data bus. quire that normal microprocessor operation be interrupted. ated by the GPIB IC when such conditions arise. age register within U1605. firmware control to reflect the depressed switch.
ters internal to U1605 via the data bus. ment displays or the individual status LEDs. writing it to U1605 so that meaningful displays will result.
switch matrix described above. Panel Drive circuitry on diagram 11. stored by the microprocessor. from the Address Decode circuitry. least significant bit of the address bus. required by the switch matrix and LED displays. control the operation of the DM 5010.
Panel Control 1C to see if a switch closure is present. by the decoder and the sequence is repeated. further explained in that description. instrument status and measurement results to the user.
diodes arranged in a matrix configuration. Panel Switches are scanned. circuitry and applied to the eight cathode rows. controllers are also included. and your system controller. controller with a GPIB cable.
are the only instruments on the bus. Checking the GPIB Address and Terminator. press the INST ID button.
Setting the Address and Terminator Switches. side of the DM 5010. to qualified personnel only.
inside of the side cover and Fig. and illustrate their meanings. code and turns on the ERROR indicator. erators manual for the meaning of any code displayed.
made by qualified personnel. nicating on the GPIB. lers, which reserve address 0 for themselves.
but may be programmed to use any primary address. The DM 5010 ignores secondary addresses. tor for use with Tektronix controllers. with the LF character to terminate a message. NO SRQ ON UNIT. space multiple arguments are delimited by a comma.
ASCII characters are accepted. Selects the ACV function. equal to both limits.
Selects the DCV function. mand and generates an SRQ. Disables the monitor SRQ.
for scale, second for offset. Also see OPC ON. ment responds to ERR? out first being serial polled.
settings that may be queried. See Power On Settings. messages to the DM 5010. ment in place of the number for the address. ment that assigns the variable. as illustrated in Fig.
that enables SRO interrupts. quired for a particular controller. for output, but do not start such output. and input the settings string. by sending back the settings string. easier than getting settings data.
cause the DM 5010 to output a reading. string or numeric variable. are specified after the colon in the INPUT statement. reading and output it as soon as it is available. ment program later in this guide.
ing while many readings are averaged. cannot supply output within five seconds. and asserts EOl concurrently.
statement or a calculation. as long floating point. the 4041 sample measurement program. status byte and error code appropriately. events and some normal events. header, argument, or delimiter?
with a message on your console. is available from the status byte. is other than the one expected. in a number of ways.
sent to the DM 5010. terface messages transmitted to the DM 5010. ceives the message while listen addressed. higher than the number listed. and 4 are typical output from the programs. It is not supported.
whole or in part. on 5010 in Tn 5000 aainfraae. ProifraM assunes no other instruaents on the bus. Prints readings on screen. GOn 5010 nAKING HEASUREnENTS. Averade of 20 readlnds?
DK 5dl9 MAKING HEASUREMENTS. It is not supported. Copies must include the above coparisht and warranta notice. DM 5010 in TM 5000 mainframe. Prosram assumes no other instruments on the GPIB. usins four different DM 5010 acsuisttion modes.
Prints readinss on 4041 printer. Connect 4041 and TM 5000 mainframe with GPIB cable. GDM 5010 makinS measurements.
REF: ANSI STD X3. utility Software is available from Tektronix, Inc. suit your particular applications. this Instrument Interfacing Guide was printed. Tektronix Field Office for further information. free number serving your area.
free number serving each region. package you want to order. ct Partt Ordar Daak ToU. Contact local Tektronix sales office. Tektronix programmable instruments and controllers.
coding and documentation standards. authorized representative of your employer. Tektronix Instrumentation Software Ubrary staff. which Software Products are furnished. kind, either expressed or implied. expiration of the warranty period.
merchantability or fitness for a particular purpose. breach of this warranty. advance notice of the possibility of such damages. Printed at the Uirted States of America. for instructional purposes only. Produced Oy the GPI Marketing Applications Support Group.
et connecteurs de la face avant. sa batterie interne soit suffisamment chargee. Procedure de Reglage de ce manuel. Module dAlimentation de la Sene TM 5000. alimentation est correctement positionne.
selection de frequence reseau. respondre a la frequence du reseau. cavalier est positionne sur 60 Hz. Installer et oter le tiroiravec precaution.
en decouvrir la raison. fois cette condition satisfaite. allument une fois enfonces. bouton est aliume a la fois. une mesure de tension. affiche pour les fonctions OHMS et DIODE TEST.
en milli, kilo, ou mega. une meme gamme de mesure. tance via le Bus QPIB. tion de ce meme chapitre. Indications des gammes de mesure.
ce decalage n est plus applique. une autre fonction de mesure. des tensions alternatives efficaces vraies. niveau de tension continu. au convertlsseur de tension efficace. ment la gamme superieure.
chees librement a la vitesse selectionnee. fonction de mesure seiectionnee. une serie de mesures.
nombre de mesures moyennees. echelle memorisee, et affiche le resuitat. entier, decimal, positif ou negatifl. le rapport de deux puissances.
etant la mesure de tension. dans le calcul de dBr. ment superieure aux deux constantes. point decimal et signe.
cette constante et affiche la valeur memorisee. sur le Bus GPIB. les mesures en face avant.