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Author: mk4001

LAN_Capture.py

@@ -0,0 +1,102 @@
+#!/usr/bin/env python 3.4.3
+#-*- coding:utf-8 –*-
+#-----------------------------------------------------------------------------
+#The short script is a example that open a socket, sends a query to return a
+#screen dump from the scope, saves the screen dump as a BMP in the python folder,
+#and closes the socket.
+#
+#Currently tested on SDS1000X-E,2000X-E, and 5000X models
+#
+#No warranties expressed or implied
+#
+#SIGLENT/JAC 03.2019
+#
+#-----------------------------------------------------------------------------
+import socket # for sockets
+import sys # for exit
+import time # for sleep
+#-----------------------------------------------------------------------------
+
+remote_ip = "192.168.0.11" # should match the instrument’s IP address
+port = 5025 # the port number of the instrument service
+
+def SocketConnect():
+    try:
+        #create an AF_INET, STREAM socket (TCP)
+        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    except socket.error:
+        print ('Failed to create socket.')
+        sys.exit();
+    try:
+        #Connect to remote server
+        s.connect((remote_ip , port))
+        s.setblocking(0) # non-blocking mode, an exception occurs when no data is detected by the receiver
+        #s.settimeout(3)
+    except socket.error:
+        print ('failed to connect to ip ' + remote_ip)
+    return s
+
+def SocketQuery(Sock, cmd):
+    try :
+        #Send cmd string
+        Sock.sendall(cmd)
+        Sock.sendall(b'\n') #Command termination
+        time.sleep(1)
+    except socket.error:
+        #Send failed
+        print ('Send failed')
+        sys.exit()
+
+    data_body = bytes()
+    while True:
+        try:
+            time.sleep(0.01)
+            server_replay = Sock.recv(8000)
+            #print(len(server_replay))
+            data_body += server_replay
+        except BlockingIOError:
+            print("data received complete..")
+            break
+    return data_body
+    '''
+    PACK_LEN = 768067#the packet length you will receive;
+    #SDS5000X is 2457659;SDS1000X-E/2000X-E is 768067
+    had_received = 0
+    data_body = bytes()
+
+    while had_received < PACK_LEN:
+        part_body= Sock.recv(PACK_LEN - had_received)
+        data_body += part_body
+        part_body_length = len(part_body)
+        #print('part_body_length', part_body_length)
+        had_received += part_body_length
+    return data_body
+    '''
+
+def SocketClose(Sock):
+    #close the socket
+    Sock.close()
+    time.sleep(5)
+
+def main():
+    global remote_ip
+    global port
+    global count
+
+    #Open a file
+    file_name = "SCDP.bmp"
+
+    # Body: Open a socket, query the screen dump, save and close
+    s = SocketConnect()
+    qStr = SocketQuery(s, b'SCDP') #Request screen image
+    print(len(qStr))
+    f=open(file_name,'wb')
+    f.write(qStr)
+    f.flush()
+    f.close()
+
+    SocketClose(s)
+    sys.exit
+
+if __name__ == '__main__':
+    proc = main()