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TABLE 5-2 TEST PROCEDURES AND DESCRIPTION
TEST
DESCRIPTION
Test 1
Microprocessor internal RAM test.; used to verify that the processor RAM is
functioning correctly.
Test 2
External RAM test; used to test the instrument’s RAM for proper
function.
Test 3
EPROM checksum test; used to check program for correct data.
Test 4
External RAM checksum test; displays the number of times Error 16
and 17 have occurred.
Test 5
Verifies that all keys are functional and all LED displays are working.
Test 6
Used to verify that all relays and/or solid state relay driver outputs are working.
Test 7
Used to check the operation of Output 1, mA current output.
Test 8
Used to check the operation of Output 2, mA current output.
Test 9
Auxiliary input test; used to test position proportioning (slidewire
feedback or remote setpoint voltage levels).
Test A
Communications hardware test; tests the send and receive functions.
5.3.1 TEST 1 - INTERNAL RAM TEST
Checks the Random Access Memory in the microprocessor. No special test equipment is
required for this test. With Test 1 displayed tSt1 press and hold the DOWN key then press
the SCROLL key. tSt1 will be displayed momentarily while the test is in progress. Upon
successful completion the instrument will initiate Test 2 automatically.
5.3.2 TEST 2 - EXTERNAL RAM TEST
Checks the operation of the RAM external to the microprocessor. No special test equipment
is required. After completion of Test1, tSt2 will be displayed momentarily while the test is in
progress. Upon successful completion of Test 2, Test 3 will be initiated.
5.5.3 TEST 3 PROGRAM - EPROM TEST
This is a checksum test to verify data integrity of the stored program. No special test equip-
ment is required for this test. After completion of Test 2, tSt3 will be displayed momentarily
while the test is in progress. Upon successful completion the instrument will display tSt1.
5.3.4 TEST 4 - EXTERNAL RAM CHECKSUM TEST
This is a checksum test to verify the integrity of data stored in RAM and indicate the number
of times the instrument has had an Error 16 or 17. No special test equipment is required for
this test. With tSt4 displayed, press and hold the DOWN key then press the SCROLL key.
The display will go blank momentarily, then briefly display two numbers and then tSt4 will be
displayed. These numbers indicate the number of times Error 16 and 17 have occurred
respectively. Test 4 can be executed again, or another test may be selected. Test 4 occurs
when the instrument enters the Control mode and periodically during Control mode operation.
