All IOP models were restarted recently, which gives me an opportunity to check on the AUTOCAL status of the 18 bit DACs at startup. We have 100% success, all taking the usual 5.3 seconds except two taking 5.1 seconds and two taking 6.5 seconds.

h1sush2a
[  129.028682] h1iopsush2a: DAC AUTOCAL SUCCESS in 5344 milliseconds
[  134.392007] h1iopsush2a: DAC AUTOCAL SUCCESS in 5345 milliseconds
[  141.426432] h1iopsush2a: DAC AUTOCAL SUCCESS in 6576 milliseconds +++
[  146.789845] h1iopsush2a: DAC AUTOCAL SUCCESS in 5345 milliseconds
[  152.582684] h1iopsush2a: DAC AUTOCAL SUCCESS in 5344 milliseconds
[  157.944027] h1iopsush2a: DAC AUTOCAL SUCCESS in 5344 milliseconds
[  163.305387] h1iopsush2a: DAC AUTOCAL SUCCESS in 5344 milliseconds
h1sush2b
[   49.239824] h1iopsush2b: DAC AUTOCAL SUCCESS in 5344 milliseconds
[   54.603246] h1iopsush2b: DAC AUTOCAL SUCCESS in 5344 milliseconds
h1sush34
[  258.304447] h1iopsush34: DAC AUTOCAL SUCCESS in 5345 milliseconds
[  263.667874] h1iopsush34: DAC AUTOCAL SUCCESS in 5341 milliseconds
[  269.461621] h1iopsush34: DAC AUTOCAL SUCCESS in 5344 milliseconds
[  274.824274] h1iopsush34: DAC AUTOCAL SUCCESS in 5340 milliseconds
[  280.618002] h1iopsush34: DAC AUTOCAL SUCCESS in 5344 milliseconds
[  285.979340] h1iopsush34: DAC AUTOCAL SUCCESS in 5344 milliseconds
h1sush56
[  200.361619] h1iopsush56: DAC AUTOCAL SUCCESS in 5344 milliseconds
[  205.724956] h1iopsush56: DAC AUTOCAL SUCCESS in 5345 milliseconds
[  211.523836] h1iopsush56: DAC AUTOCAL SUCCESS in 5344 milliseconds
[  216.886349] h1iopsush56: DAC AUTOCAL SUCCESS in 5345 milliseconds
[  222.680190] h1iopsush56: DAC AUTOCAL SUCCESS in 5344 milliseconds
h1susb123
[   48.320209] h1iopsusb123: DAC AUTOCAL SUCCESS in 5344 milliseconds
[   53.681546] h1iopsusb123: DAC AUTOCAL SUCCESS in 5344 milliseconds
[   59.472545] h1iopsusb123: DAC AUTOCAL SUCCESS in 5345 milliseconds
[   64.838906] h1iopsusb123: DAC AUTOCAL SUCCESS in 5344 milliseconds
[   71.868287] h1iopsusb123: DAC AUTOCAL SUCCESS in 6576 milliseconds ***
[   77.231569] h1iopsusb123: DAC AUTOCAL SUCCESS in 5344 milliseconds
[   82.594837] h1iopsusb123: DAC AUTOCAL SUCCESS in 5345 milliseconds
[   87.957423] h1iopsusb123: DAC AUTOCAL SUCCESS in 5345 milliseconds

h1oaf0
[   51.570076] h1iopoaf0: DAC AUTOCAL SUCCESS in 5345 milliseconds

h1susey
[   51.283680] h1iopsusey: DAC AUTOCAL SUCCESS in 5346 milliseconds
[   56.644737] h1iopsusey: DAC AUTOCAL SUCCESS in 5346 milliseconds
[   62.436958] h1iopsusey: DAC AUTOCAL SUCCESS in 5346 milliseconds
[   67.803614] h1iopsusey: DAC AUTOCAL SUCCESS in 5346 milliseconds
[   73.164682] h1iopsusey: DAC AUTOCAL SUCCESS in 5346 milliseconds

h1iscey
[ 1163.540088] h1iopiscey: DAC AUTOCAL SUCCESS in 5133 milliseconds ---

h1susex
[284637.769316] h1iopsusex: DAC AUTOCAL SUCCESS in 5346 milliseconds
[284643.127603] h1iopsusex: DAC AUTOCAL SUCCESS in 5343 milliseconds
[284648.914014] h1iopsusex: DAC AUTOCAL SUCCESS in 5328 milliseconds
[284654.271652] h1iopsusex: DAC AUTOCAL SUCCESS in 5345 milliseconds
[284659.629553] h1iopsusex: DAC AUTOCAL SUCCESS in 5383 milliseconds

h1iscex
[  365.004169] h1iopiscex: DAC AUTOCAL SUCCESS in 5134 milliseconds ---