Sifos Technologies PowerSync PSA100 Technical Reference Manual Download Page 29

Page: 29 / 147

PowerSync Analyzer Reference Manual

March 9, 2010

Sifos Technologies page

The

Apply Settings

button will annunciate via

red

text that a change has been selected and must be applied.

The

Auto-Discover

button will cause the PowerSync Analyzer to automatically discover the proper ALT and Polarity

configuration of a connected PSE on the current slot-port, and then apply those settings across all ports associated with
the presently connected PowerSync Analyzer or across the multiple chassis’ associated with a PSA2400. These settings
may be retained in a PSE local configuration file through the

File Save

operation.

The

Connect Port

button creates a connection from the incoming PoE bus to the detection passives. The

Disconnect

Port

removes the detection passives from the bus. A PSE will not successfully detect and power-up a port unless the

detection passives are

connected

. Once the PSE port is powered, the detection passives automatically become invisible

to the PoE bus, however an AC MPS passive load of 24 K

then activates. This means that a PSE utilizing the AC

MPS method will not remove power unless the port is

disconnected

(or isolated). However, if the PSE is using the DC

MPS method, the absence or presence of the 24 K

AC MPS signature resistance will have no effect and the port will

remove power as soon as the static current load (

see Section 3.1.6

) drops below a threshold of 5 to 10 mA.

The Port Configuration menu also offers the ability to generate an

External Trigger

event when either the

Connect

Port

Disconnect Port

buttons are pressed. This trigger event will occur within several milliseconds of the actual

switch operation in the PSA test port. Checking the

Send Trigger

box will cause this behavior to occur and

deselecting it will inhibit External Trigger generation. (

See Section 2.3.2 for further information on triggering

Users also have the option to simultaneously connect or disconnect all test ports within the currently addressed chassis
using the

Connect Port

and

Disconnect Port

buttons. Selecting the

Connect/Disconnect All Ports

checkbox will

enable the “broadcast” connection operation. Note that this operation will

not

span multiple chassis’ of a PSA2400

configuration.

3.1.3.

Slot-Port and Chassis Selection

PSA Interactive provides one or more menus with capability to route configurations and generate queries from selected
test ports and selected PSA chassis’s. Within these menus, the Slot and Port selection lists will only contain the valid
populated slots for the currently connected chassis. The Slot and Port may be selected by clicking on the slot and port
from the scrolled list or by typing a value into the entry field directly. Once a Slot and Port have been selected on

any

menu

, those values will persist as other menus or sub-menus are opened and closed. This provides an efficient means to

route configurations and queries at virtually any time and only when necessary. Whenever a new Slot and Port are
selected within any menu, the

Read Settings

button must be actuated to update the menu to current settings of the new

Slot and Port.

When the

Select Chassis

button is pressed, a window opens

(Figure

3.5)

with a scrolled list of all “known” PSA chassis IP addresses on the

LAN. This list of chassis addresses initially comes from the local
environment file (

see Section 2.4.4

). The list of known or available

chassis’ will be updated whenever PSA Interactive is started. It will
also be updated if a selected chassis is found

not

to exist on the LAN.

Users may add a chassis by entering the new chassis address in the
Select Chassis entry field, then pressing

Add Chassis

. If the entered

chassis is found on the LAN, it will be added to the list and become
available for future selection. It must then be

selected

from the list

before

pressing

Connect

to effect the PSA Interactive connection

change. The

Delete Chassis

button may be used to remove a chassis

address from the list of known addresses. This change will also be
retained in the local environment file.

The PSA Chassis Selection menu offers a checkbox for enabling or disabling

Demo

Mode

. When

Connect

ed in

Demo Mode

, PSA Interactive will present a menu

allowing users to select and then manage an imaginary PSA platform.

Demo Mode

will automatically be invoked upon entering PSA Interactive if no known PSA chassis’
are discovered on the LAN. Many PSA Interactive menus, standard PSE tests, and
operations will function in

Demo Mode

as if an actual PSA chassis and PSE ports were

connected.

Once a chassis is selected and appears in the entry field, simply press

Return

to retain

that new chassis address as the target recipient of configuration commands and queries.

Figure 3.5

PSA Chassis Selection Dialog