Schematic Of Path For Gate Resistors; How To Measure Gate Resistors - Keysight PD1550A System Installation Manual

Install Components on PD1550A Interface Module

Schematic of Path for Gate Resistors

Figure 21 Schematic of Gate Drive Resistors
Figure 22 PD1550A Gate Drive Resistor Modules

How to Measure Gate Resistors

You can use a DMM to measure the Gate Resistors directly on the resistor
module or, after installing the Gate Resistor Modules on the Interface Module,
you can measure the resistor values on the Interface Module itself. This helps to
insure the Gate Resistor Modules are properly installed.
Keysight PD1550A Installation Guide
R
Vo+
Vo-
R
R
C
or R
SHARED
R
OFF
-- To measure R : VG to R
C
: ON to R
-- To measure R
ON
-- To measure R : OFF to R
Off
ON
I
G
R
C
Vgs
OFF
R
ON
(R )
C SHARED
(R )
C SHARED
(R )
C SHARED
Accessory and Probe Installation
D
V
G S
Example Gate
Drive Resistor
Board:
= 0 
R
ON
R = 0 
OFF
= 4.7 
R
C
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