GE Druck ADTS 405 R/F Mk2, Instruction Manual

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Chapter 5. TESTING AND FAULT FINDING
68 | ADTS 405 Mk2 Instruction Manual-English © 2015 General Electric Company – All rights reserved.
5.6.7 Testing of IEEE 488 Facility
The IEEE 488 facility requires specialist knowledge of both IEEE 488 communications and test
programming for specified, authorized test procedures. Only qualified personnel should use this
facility, the test procedure must be authorized by the appropriate engineering authority.
If the display does not show that SCPI is selected follow the procedure in Section 3.7.3 Connection
of the IEEE 488 Facility then carry out the following procedure:
a. Press [SCPI].
b. Press CLEAR/QUIT , [DEVICE ADDRESS].
c. Check the address displayed is 1.
d. If not, press 1 on the numeric key-pad and then ENTER .
e. If any changes have been made, press CLEAR/QUIT until requested to accept the changes,
then press ENTER .
f. The ADTS 405 automatically restarts, when the display shows the main pressure display
perform the test detailed in 5.6.7.1 Programming a Test of the IEEE 488 Facility.
5.6.7.1 Programming a Test of the IEEE 488 Facility
There are many different programs and items of equipment for communicating over the IEEE 488
interface. In the following example, the user must be familiar with the IEEE 488 bus controller to be
used.
The following example commands can be used to check for correct operation of the IEEE 488
interface. Initialize the bus controller as follows:
a. Set Address 1 as the talker listener address.
b. Make sure that bus time-out periods are set sufficiently high (e.g, 5 seconds).
c. Set the bus controller to send EOI with last byte and to expect EOI on last byte of received
data.
d. Send interface clear (IEEE 488 command).
e. Send “SOURCE:STATE OFF” (one space between STATE and OFF).
f. Send “SOURCE:STATE?”
g. Instruct device 1 to TALK and input the response string. The response string should be
“OFF”.
If the above test fails do the following:
i. Check the continuity of the IEEE 488 cable, if unserviceable, replace the cable.
ii. Do steps a. to g. again.
If the test fails again, return the ADTS 405 to the repair depot.