sig-mon: Fix limit on MAGTHRESVAL PV

The higher limit is 1.999984741211, because the format for this data is
UQ1.15

Fixed the tests too.

db/sis8300llrf.substitutions

@@ -97,16 +97,16 @@ file sis8300llrf-Main-Status-CHCG.template
 file sis8300llrf-Main-SigMon-CH.template
 {
     pattern{CHANNEL_ID,    ASYN_ADDR, MAGTRESH_DRVL, MAGTRESH_DRVH}
-           {AI0,           0,         0.0,           0.999984741211}
-           {AI1,           1,         0.0,           0.999984741211}
-           {AI2,           2,         0.0,           0.999984741211}
-           {AI3,           3,         0.0,           0.999984741211}
-           {AI4,           4,         0.0,           0.999984741211}
-           {AI5,           5,         0.0,           0.999984741211}
-           {AI6,           6,         0.0,           0.999984741211}
-           {AI7,           7,         0.0,           0.999984741211}
-           {AI8,           8,         0.0,           0.999984741211}
-           {AI9,           9,         0.0,           0.999984741211}
+           {AI0,           0,         0.0,           1.999984741211}
+           {AI1,           1,         0.0,           1.999984741211}
+           {AI2,           2,         0.0,           1.999984741211}
+           {AI3,           3,         0.0,           1.999984741211}
+           {AI4,           4,         0.0,           1.999984741211}
+           {AI5,           5,         0.0,           1.999984741211}
+           {AI6,           6,         0.0,           1.999984741211}
+           {AI7,           7,         0.0,           1.999984741211}
+           {AI8,           8,         0.0,           1.999984741211}
+           {AI9,           9,         0.0,           1.999984741211}
 }
 
 ########### REFERENCE COMPENSATION MONITORING ########### 

test/test_sig_mon.py

@@ -32,7 +32,7 @@ class TestSignalMonitoring:
         for ch in range(10):
             caput(prefix + ":AI" + str(ch) + "-SMON-STARTEVNT", 0)
             caput(prefix + ":AI" + str(ch) + "-SMON-STOPEVNT", 2)
-            caput(prefix + ":AI" + str(ch) + "-SMON-MAGTRESHVAL", 1)
+            caput(prefix + ":AI" + str(ch) + "-SMON-MAGTRESHVAL", 2)
             caput(prefix + ":AI" + str(ch) + "-SMON-ALARMCND", 1)
             caput(prefix + ":AI" + str(ch) + "-SMON-ILOCKEN", 1)