Technical data
6Repair Guide
82 N1911A/1912A P-Series Power Meters Service Guide
Tools Required
Keysight Part 
Number
Description Visual
N1911-61004
N1912-80005
• 3 unit of ¼” drive torque wrenches
• 1 unit of calibrated to 2.37 Nm (21 lb-in)
• 1 unit of calibrated to 1.02 Nm (9 lb-in)
• 1 unit of calibrated to 0.68 Nm (6 lb-in)
• 3 unit of torque screwdrivers
• 1 unit of calibrated to 2.37 Nm (21 lb-in)
• 1 unit of calibrated to 0.56 Nm (5 lb-in)
• 1 unit of calibrated to 0.34 Nm (3 lb-in)
• T6, T8, T10, & T20 Torx screwdriver bits
• 7/16” break spanner, calibrated to 2.37 Nm 
(21 lb- in)
• 5/16” break spanner, calibrated to 1.02 Nm 
(9 lb- in)
• 9/32” socket
N1912-61807 Special tooling kit
• Contains:
• ODU socket
• Trigger socket
• 9/16” BNC socket
• Sockets must be used in conjunction with a 
¼” drive torque wrench, calibrated to 2.37 
Nm (21 lb-in)
• The 9/16” BNC socket is required to 
remove the Trig In/Out fasteners for the 
majority of N1911A/12A power meters
• The trigger socket is required to remove the 
Trig In/Out fasteners for a minority of 
N1911A/12A power meters
ODU
Socket
Trigger
Socket
9/16’’ 
BNC
Socket










