- ATTACH
TO ATTACH TWO AD11-K S FOR TESTING WITH EVALC TYPE:
DS> ATTACH DW780 HUB DW0 3 4 ; ON 11/780, OR:
DS> ATTACH DW750 HUB DW0 ; ON 11/750, OR:
DS> ATTACH DW730 HUB DW0 ; ON 11/730, AND:
DS> ATTACH LPA11K DW0 LAA0 770460 340 5
DS> ATTACH AD11K LAA0 ADA0 770400 340 6
DS> ATTACH AD11K LAA0 ADA1 770440 400 6
- HELP
EVALC will provide a means to verify the correct operation
of an AD11-K on the I/O bus of a functional LPA11-K. It
executes basic confidence tests on the LPA11-K prior to
testing of the AD11-K. Each test in EVALC checks the
AD11-K's performance or logical circuitry. Following the
verification of the LPA11-K, and testing of the
addressibility of the AD11-K, a series of tests are
performed to check the AD11-K control logic. Performance
testing is done by sampling known signals through a
wraparound module and comparing them to nominal expected
values +/- a specified error tolerance. In addition,
statistical tests are used to test noise level, relative
accuracy and differential linearity.
- SECTIONS
- DEFAULT
This section includes all test code, tests 1 thru 23.
Note: Test 23 will not run on a VAX 11/730.
- LOGIC
This section contains all control logic tests that do not
require the wraparound module, tests 1 thru 10.
- WRAP
This section contains tests not contained in the logic
section, tests 11 thru 23. Wraparound tests compare the
AD11-K performance to specified error tolerances.
- ALL
This section contains the default tests, 1 thru 23.
- ADCAL
This section is the AD11-K calibration routine, test 24.
- DEVICE
AD11-K
DESCRIPTION: A/D CONVERTOR SUBSYSTEM TO THE LPA11-K
LINK: DW780 UNIBUS ADAPTOR (OR EQUIVALENT)
RECOMMENDED GENERIC: ADAn
- HARDWARE REQUIREMENTS
VAX PROCESSOR
256 K BYTES MEMORY
UNIBUS INTERFACE (DW780 OR EQUIVALENT)
LPA11-K (at least one, at most eight)
AD11-K (one or two per LPA)
G5036 WRAPAROUND MODULE (one per AD11-K)
BC08R-01 CABLE
EDC PRECISION VOLTAGE SOURCE (for calibration routine)
Note:
Switch on the G5036 must be in "0" position (except
when running the calibration routine). The wraparound
(G5036) module must be connected as follows:
AD11-K TO BC08R CONNECTION A-A, VV-VV
BC08R TO AD11-K CONNECTION "UPSIDE-DOWN" A-VV, VV-A
- EVENT
NO EVENT FLAGS ARE IMPLEMENTED BY THIS DIAGNOSTIC
- QUICK
QUICK FLAG IS NOT IMPLEMENTED BY THIS DIAGNOSTIC
- SUMMARY
SUMMARY COMMAND IS NOT IMPLEMENTED BY THIS DIAGNOSTIC
- MANUAL
THE MANUAL TEST SECTION IS THE CALIBRATION (ADCAL) TEST SECTION
- CALIBRATION PROCEEDURE
Step 1 - Install the G5036 wrap-around module into
the suspected AD11-K option using a BC08R-01 cable. If the
AD11-K has a long cable connected to either an H3220 pannel
or AM11-K, remove cable and replace it with a one foot
cable. Connect the BC08R-01 cable as follows:
AD11-K end = Pin A to Pin A
G5036 end = Pin A to Pin VV
Step 2 - Connect an EDC precision voltage source to
the proper tabs on the G5036 module using a short shielded
cable. The EDC should be floating to avoid ground loops.
Connect the voltage source return to the "G " lug. Set the
switch on the G5036 module to the "E" position.
Step 3 - Before proceeding, the system should have
warmed up for at least 15 minutes.
Step 4 - Set the EDC voltage source to 1.22 mV.
Select the AD11-K (ADA0 OR ADA1) to be calibrated, select
channel 0, offset adjustment, and +/- 5V range as follows:
DS> LOAD EVALC
DS> SELECT ADA0
DS> START/SECTION:ADCAL
.. PROGRAM: EVALC, REV 1.2, 24 TESTS, AT 16:04:22.14.
TESTING: _AD0
INPUT CHANNEL # TO SAMPLE [(00000000000), 00000000000-00000000077(O)] 0
OFFSET ADJUSTMENT [(YES), NO] YES
0 TO 10 OR 10.24 VOLT RANGE [(NO), YES] NO
ADJUST THE OFFSET SUCH THAT THE VALUES 004000 AND 004001 HAV BEEN
DETECTED 50% EACH (+/- 20%)
CHANNEL SELECTED: 000(O)
SAMPLES FOUND AT 004001/ABOVE: 41.3%
SAMPLES FOUND AT 004000/BELOW: 58.7%
HIGHEST SAMPLE DETECTED: 004001(O)
LOWEST SAMPLE DETECTED: 004000(O)
[ ETC. the test will continue to loop until halted]
Adjust offset for conversion values of 4000 to 4001, such
that approximately 50% (+/- 20%) of the sampled values fall
at or above 4001. Allow adjustment to stablize. Stop the
calibration routine with a ^C.
Step 5 - Set the EDC precision voltage source to
4.99634 V. Start the calibration routine again, select
channel 0, select gain adjustment and +/-5 volt range.
Start the test as follows:
DS> START/SECTION:ADCAL
.. PROGRAM: EVALC, REV 1.2, 24 TESTS, AT 16:04:22.14.
TESTING: _ADA0
INPUT CHANNEL # TO SAMPLE [(00000000000), 00000000000-00000000077(O)] 0
OFFSET ADJUSTMENT [(YES), NO] NO
ADJUST GAIN SUCH THAT THE VALUES 007776 AND 007777 HAVE BEEN DETECTED
50% EACH (+/- 20%)
CHANNEL SELECTED: 000(O)
SAMPLES FOUND AT 007777/ABOVE: 61.1 %
SAMPLES FOUND AT 007776/BELOW: 38.9 %
HIGHEST SAMPLE DETECTED: 007777(O)
LOWEST SAMPLE DETECTED: 007775(O)
[ ETC ]
Adjust the gain for conversion values of 7776 to 7777 such
that approximately 50% (+/- 20%) fall at or below 7776(O).
Allow the adjustment to stablize, and stop the calibration
routine (^C).
Step 6 - Verify offset adjustment by repeating step 8.
Step 7 - Remove the EDC precision voltage source, and
place switch on the G5036 wraparound module in the 0
position.