Chapter 2 Service
About the HP 53131A/132A Calibration Menu
Assembly-Level Service Guide
2-13
2
To Secure Against Calibration
1
Press and hold Scale & Offset key, then cycle POWER key.
CAL UNSECURE
is displayed. If
CAL SECURE
is displayed, then the
Counter is already secured against calibration and the remaining steps
are not applicable.
2
Press Scale & Offset key until
CODE:
is displayed.
3
Press the appropriate arrow keys to enter the security code, then
press Enter key.
CAL SECURE
is displayed.
To Change to a New Security Code
1
Press and hold Scale & Offset key, then cycle POWER key.
2
Unsecure for calibration by the using the procedure described in
the section titled “To Unsecure for Calibration.”
3
Press Scale & Offset key until
CODE:
is displayed.
4
Press the appropriate arrow keys to enter the new or customized
security code, then press Enter key.
A scrolling message will appear, indicating what the new code is.
For example, the Counter displays the
NEW CODE IS 5
if you entered “5”
as the new code.
Summary of Contents for 53131A
Page 1: ...Assembly Level Service Guide HP 53131A 132A 181A 225 MHz Counter ...
Page 2: ......
Page 14: ...Contents xii Assembly Level Service Guide ...
Page 22: ...Preface xx Assembly Level Service Guide ...
Page 23: ...1 Performance Tests Verifying Specifications ...
Page 97: ...2 Service ...
Page 149: ...3 Replacing Assemblies Disassembly and Reassembly ...
Page 173: ...4 Retrofitting Options ...
Page 191: ...5 Replaceable Parts ...
Page 201: ...6 Backdating Manual Changes ...
Page 218: ...Chapter 6 Backdating Backdating Specifications 6 18 Assembly Level Service Guide 6 ...
Page 219: ...7 HP 53131A 132A Specifications ...
Page 235: ...8 HP 53181A Specifications ...
Page 246: ...Chapter 8 HP 53181A Specifications General Information 8 12 Assembly Level Service Guide 8 ...
Page 252: ......
Page 254: ... Manual Part Number 53131 90039 Printed in U S A MARCH 1999 ...