Table 2-3: Platform Voltage Supplies To Module - Tektronix H600 RFHawk Service Manual

Spectrum analyzer

Table of Contents

H600 & SA2600 Service Manual

The power modes are:

Suspend mode. The platform automatically enters shutdown mode to save

battery power following a period of instrument inactivity, or when you press

the front panel power button. You can set the length of this inactivity from the

Start > Settings > Control Panel > Power Management > Power Saver

tab. Before entering this mode, registry information and nonvolatile memory

are backed up and all nonessential power supplies shut down. LCD backlights

are turned off and the touch-screen display is inactivated. The instrument

module will also be shut down.

During suspend mode, the real-time clock and SDRAM refresh remain active.

To return from this state, you must press the front-panel power switch to

power up the platform, which takes approximately one minute.

Display Power Saver mode. The front-panel status indicator changes from

Green to Amber to indicate the display Power Saver mode. In this state, the

display and backlight are turned off to save power. Instrument modules

remain powered on. Pressing the front-panel power switch cancels the Power

Saver mode and returns the platform to an active state. Measurements that are

running when you enter this mode continue to run.

Automatic Shutdown mode. If a voltage is present on ﬁne-pitched

component pins under humid conditions, corrosion can occur over time.

Placing the internal circuitry in shutdown mode when not in use can minimize

this problem. If the platform remains in shutdown mode for more than two

hours, the processor system, with the exception of the real-time clock, is

completely powered off.

Transition to the power-down state occurs when the shutdown state timer

times-out or the internal batteries becomes critically low. Pressing the

front-panel power switch reactivates the internal circuitry and returns the

platform to an active state.

Internal Supplies to Module. In addition to the power requirements of the internal

circuit boards, the platform provides the following voltages to the instrument

module.