diff --git a/src/main/java/com/telpo/dipperposition/service/impl/DipperAstPosAsyncTaskServiceImpl.java b/src/main/java/com/telpo/dipperposition/service/impl/DipperAstPosAsyncTaskServiceImpl.java
index 892988c..5f18ff5 100644
--- a/src/main/java/com/telpo/dipperposition/service/impl/DipperAstPosAsyncTaskServiceImpl.java
+++ b/src/main/java/com/telpo/dipperposition/service/impl/DipperAstPosAsyncTaskServiceImpl.java
@@ -242,10 +242,10 @@ public class DipperAstPosAsyncTaskServiceImpl implements IDipperAstPosAsyncTaskS
         astTimeCmd += HexConvert.encodeHEX(lanLongValue);
         astTimeCmd += HexConvert.encodeHEX(altLongValue);
 
-        String hexIn = HexConvert.convertStringToHex(astTimeCmd) + HexConvert.makeChecksum(astTimeCmd);
+        //String hexIn = HexConvert.convertStringToHex(astTimeCmd) + HexConvert.makeChecksum(astTimeCmd);
+
+        String hexIn = astTimeCmd + HexConvert.makeChecksum(astTimeCmd);
 
-        //String sendResult = client.sendCmd(hexIn, ackAckCheckRef);
-        //client.closeConnection();
 
         //return sendResult;
         return hexIn;
diff --git a/src/main/java/com/telpo/dipperposition/service/impl/DipperAstTimeAsyncTaskServiceImpl.java b/src/main/java/com/telpo/dipperposition/service/impl/DipperAstTimeAsyncTaskServiceImpl.java
index 1ae8c2d..8ecb290 100644
--- a/src/main/java/com/telpo/dipperposition/service/impl/DipperAstTimeAsyncTaskServiceImpl.java
+++ b/src/main/java/com/telpo/dipperposition/service/impl/DipperAstTimeAsyncTaskServiceImpl.java
@@ -95,8 +95,8 @@ public class DipperAstTimeAsyncTaskServiceImpl implements IDipperAstTimeAsyncTas
         astTimeCmd += "0000000000";
         astTimeCmd += "00286BEE";
 
-        String hexIn = HexConvert.convertStringToHex(astTimeCmd) + HexConvert.makeChecksum(astTimeCmd);
-
+        //String hexIn = HexConvert.convertStringToHex(astTimeCmd) + HexConvert.makeChecksum(astTimeCmd);
+        String hexIn = astTimeCmd + HexConvert.makeChecksum(astTimeCmd);
         //String ackAckCheckRef = "233E0101020004020A1D";
         //String sendResult = client.sendCmd(hexIn, ackAckCheckRef);
         //client.closeConnection();