Agilent Technologies 35670A Service And Operator's Guide

Service Guide 4
Agilent 35670A Supplement 49
A9 NVRAM
The NVRAM is in now incorporated into the A17 CPU board and
the following information should be transferred to the A17
signal descriptions:
Everything else in the section should be disregarded.
A99 Motherboard
Disregard the sections on HSYNC, VDATA, and VSYNC
Page in original guide 9-12, 13
PROTCTn Protect–A low on this line disables the battery-backed static RAM. This line is low during
power-up and power-down, when the CPU assembly’s microprocessor is externally reset, and
when +5 volts is too low.
VBATT Battery Voltage–This line provides the power to the battery-backed static RAM and real time
clock. When the analyzer is on, the +5 volts provides the power for this line. When the
analyzer is off, the battery on the A17 board provides the power for this line. Since power is
applied to the static RAM even when the analyzer is off, the static RAM is non-volatile.
Page in original guide 9-31,33

Agilent Technologies 35670A Specifications

General

Brand	Agilent Technologies
Model	35670A
Category	Measuring Instruments
Language	English