diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java
index c0a15cca..c3f57fc0 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java
@@ -66,8 +66,8 @@ public class D331RtcmMessageExecutor implements Executor<D331RtcmMessage, Void>
             DeviceChannel deviceChannel = null;
             for (Device device : deviceList) {
                 if (device.getOpMode() != GnssDevice.OP_MODE_USE) continue;
-                if (device.getModel()==GnssDevice.MODEL_G510 &&
-                        device.getFixedNum()>200 && device.getGnssSampleRate()>1
+                if ((device.getModel()==GnssDevice.MODEL_G510) &&
+                        (device.getFixedNum()>100) && (device.getGnssSampleRate()>1)
                         && (deviceBs.getD3xxCount()%device.getGnssSampleRate()) != 0) {
                     //if(!UBXUtil.has1005(forwardBytes)) continue; //1005必推
                     continue;