Testpoints; Set/Reset; Vbridge; Channel Output A - Nokia NPL-4 Series Manual

NPL-4/5/RM-104
System Module and User Interface

Testpoints

Set/Reset

Set/Reset pulse after DC separation capacitor C314
Testpoint J327
Voltage levels and wave shapes on
Testpoint J326 and J327
2.2V 2.2V

Vbridge

Vbridge
(J326) (J326)
set pulse set pulse
2.8V 2.8V
S/R (J327) S/R (J327)
VBRIDGE
Vbridge supply voltage for magnetometer's measurement bridges. Vbridge voltage is
always on during measuring session.
Testpoint J326
Nominal voltage level 2.2V ±2%
•

Channel output A

Channel A output from measurement bridge A. Signal is differential type.
Testpoints J331(+), J332(-)
Nominal voltage level is 1.1V to ground. Differential voltage level is 0.0V

Channel output B

Channel B output from measurement bridge B. Signal is differential type.
Testpoints J329(+), J328(-)
Nominal voltage level is 1.1V to ground. Differential voltage level is 0.0V
Copyright © 2005 Nokia Corporation. All rights reserved.
Page 60
Figure 22: Timing and Voltage Level l
reset pulse reset pulse
Nokia Customer Care
Timings on Vbridge and over S/R coil
>40ms >40ms
2.2V 2.2V
Vbridge Vbridge
2.8V 2.8V
1ms 1ms set pulse set pulse
In current scale S/R pulses nominal values are 1A In current scale S/R pulses nominal values are 1A
S/R (general) S/R (general) pulses over S/R coil pulses over S/R coil
>20ms >20ms
Duration 2µs Duration 2µs
reset pulse reset pulse
Issue 2 05/05