diff --git a/README.md b/README.md
index 2364bb6..6b7c6f1 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
 Remote control of the MHS-5200A function generator
 ===========
 
-[![Go Report Card](https://goreportcard.com/badge/github.com/peterska/go-mhs5200a)](https://goreportcard.com/report/github.com/peterska/go-mhs5200a)
 [![BSD 3-Clause License](http://img.shields.io/badge/bsd-3-clause.svg)](./LICENSE)
 
 About
diff --git a/main.go b/main.go
index be21fb5..f896b58 100644
--- a/main.go
+++ b/main.go
@@ -51,13 +51,13 @@ func usage() {
 	fmt.Printf("\noptions can be zero or more of the following:\n")
 	flag.PrintDefaults()
 	fmt.Printf("\n")
-	
+
 	fmt.Printf("command can be one or more of the following:\n")
-  	fmt.Printf("  showconfig - show the configuration of the current channel\n")
+	fmt.Printf("  showconfig - show the configuration of the current channel\n")
 	fmt.Printf("  on - turn output on\n")
 	fmt.Printf("  off - turn output off\n")
 	fmt.Printf("\n")
-	
+
 	fmt.Printf("  channel [1|2] - sets the channel number commands will apply to\n")
 	fmt.Printf("  frequency N - set the frequency N Hz\n")
 	fmt.Printf("  waveform name - set the waveform to name. Valid names are sine, square, triangle, rising sawtooth, descending sawtooth\n")
@@ -66,7 +66,7 @@ func usage() {
 	fmt.Printf("  offset N - set the DC offset to N%% of the amplitude. Valid range is -120%% to +120%%\n")
 	fmt.Printf("  phase N - set the phase to N°\n")
 	fmt.Printf("  attenuation [on|off] - configure -20dB channel attenuation\n")
-	
+
 	fmt.Printf("\n")
 	fmt.Printf("  showsweep - show the current sweep mode configuration\n")
 	fmt.Printf("  sweepstart N - set the sweep start frequenecy to N Hz\n")
@@ -75,11 +75,11 @@ func usage() {
 	fmt.Printf("  sweeptype [log|linear] - set the sweep type to either log or linear\n")
 	fmt.Printf("  sweepon - turn sweep function on\n")
 	fmt.Printf("  sweepoff - turn sweep function off\n")
-	
+
 	fmt.Printf("\n")
 	fmt.Printf("  sleep N - delay N seconds before executing the next command\n")
 	fmt.Printf("  delay N - delay N seconds before executing the next command\n")
-	
+
 	fmt.Printf("\n")
 	fmt.Printf("  save N - save current configuration to slot N\n")
 	fmt.Printf("  load N - load current configuration from slot N\n")
diff --git a/mhs5200a.go b/mhs5200a.go
index 75fb751..cfe9d87 100644
--- a/mhs5200a.go
+++ b/mhs5200a.go
@@ -2,24 +2,24 @@
  * cmdline utility to configure and control the MHS-5200A series for function generators
  *
  * BSD 3-Clause License
- * 
+ *
  * Copyright (c) 2020 - 2021, Peter Skarpetis
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
- * 
+ *
  * 1. Redistributions of source code must retain the above copyright notice, this
  *    list of conditions and the following disclaimer.
- * 
+ *
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
- * 
+ *
  * 3. Neither the name of the copyright holder nor the names of its
  *    contributors may be used to endorse or promote products derived from
  *    this software without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
diff --git a/script.go b/script.go
index 2737687..6b9683f 100644
--- a/script.go
+++ b/script.go
@@ -2,24 +2,24 @@
  * cmdline utility to configure and control the MHS-5200A series for function generators
  *
  * BSD 3-Clause License
- * 
+ *
  * Copyright (c) 2020 - 2021, Peter Skarpetis
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
- * 
+ *
  * 1. Redistributions of source code must retain the above copyright notice, this
  *    list of conditions and the following disclaimer.
- * 
+ *
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
- * 
+ *
  * 3. Neither the name of the copyright holder nor the names of its
  *    contributors may be used to endorse or promote products derived from
  *    this software without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE