Mcus & Dsp Firmware Upgrade - Picotest M3500A Service Manual

Contact
Number
1
2
3
4
If you disable the USB interface, the Pass/Fail output function will enable
automatically. Please follow the procedure below to enable/disable this
function.
Procedure: MENU
Or you can do this by the other way:
Procedure: CONFIG+SHIFT+RATIO
Warning! You can't use the USB interface if you want to enable the
Pass/Fail signal output. You must use the GPIB interface for remote control.
Please disconnect the USB cable from you multimeter. The signal from the
USB cable may make the Pass/Fail signal output abnormal.
2.4 MCUs & DSP Firmware Upgrade
M3500A has three microprocessors, DSP processor, Panel processor, and
Front-end processor, for various internal systems. PICOTEST allows users to
Figure 2-24
Typical Wiring
Signal Name
VBUS
D-
D+
GND
Table 2-2
→
INTERFACE
→
22
Assignment
Red
White Limit Test Pass
Green Limit Test Fail
Black
→ →
USB ENABLE/DISABLE
→
OUTPUT ENALBLE/DISABLE
Description
Floating
GND