some corrections after getting to test with the actual unit

db/mdif.db

@@ -5,15 +5,19 @@ record(stringin, "$(INSTR)$(NAME):MsgTxt")
 
 record(longout,"$(INSTR)$(NAME):DELAY")
 {
- field(DESC, "delay after trigger signal")
+ field(DESC, "target delay after trigger signal")
+ field(EGU, "x 0.1 us")
+ field(DRVH, 200000)
+ field(DRVL, 0)
  field(DTYP, "stream")
  field(OUT, "@$(PROTO) writeDelay($(INSTR)$(NAME):) $(ASYN_PORT)")
 }
-
+ 
 record(longin,"$(INSTR)$(NAME):DELAY_RBV")
 {
- field(DESC, "delay after trigger signal")
+ field(DESC, "configured delay after trigger signal")
+ field(EGU, "x 0.1 us")
  field(DTYP, "stream")
  field(INP, "@$(PROTO) readDelay($(INSTR)$(NAME):) $(ASYN_PORT)")
- field(SCAN, "1 second")
+ field(SCAN, "2 second")
 }

db/mdif.proto

@@ -1,14 +1,14 @@
 OutTerminator = CR;
 InTerminator  = CR;
-ReadTimeout    = 100;
-WriteTimeout   = 100;
+ReadTimeout    = 500;
+WriteTimeout   = 500;
 ReplyTimeout   = 1000;
-LockTimeout    = 1000;
+LockTimeout    = 500;
 
 initialise {
  out "RMT 1"; # Turn on Remote Control
  in;
- out "ECHO 0"; # Ask for reponses
+ out "ECHO 1"; # Ask for reponses
  in;
 }
 
@@ -20,6 +20,5 @@ readDelay {
 
 writeDelay {
  out "DT %d";
- in;
  @mismatch{in "%(\$1MsgTxt)s";}
 }