PRAXSYM PST Manual de usuario
Practical SystemsTransmitter User’s Manual
Praxsym Warranty Statement
PRAXSYM warrants that all items will be free from defects in material
and workmanship under use as specified in this guide for a period of
one year from date of delivery. PRAXSYM further agrees to repair or
replace, at its discretion, any failure which upon PRAXSYM's inspec-
tion appears to be a result of workmanship or material defect. In no
case, shall PRAXSYM's liability for breach of warranty exceed the pur-
chase price of the items in question. PRAXSYM's liability on any claim
of any kind, for any loss connected with, or resulting from the use of,
performance or breach thereof, installation, inspection, operation or
use of any equipment furnished by PRAXSYM, shall in no case exceed
the purchase price of the goods which give rise to the claim.
Praxsym, Inc.
P.O. Box 369
Fisher, IL 61843
Phone (217) 897-1744
Fax (217) 897-6388
www.praxsym.com
PRACTICAL SYSTEMS TRANSMITTER
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PRAXSYM
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PRAXSYM
Table of Contents
1.0 Introduction
1.1 Overview
1.2 Functional Description
2.0 Operation
2.1 Battery Charging
2.2 Keypad Definition
2.3 Display Definition
2.4 Menu Navigation
2.5 Controlling the PST Remotely
2.6 Installing the USB Serial Driver
3.0 Serial Interface Operation
3.1 Configuring Tera Term Pro
3.2 Commands
3.3 Error Messages
4.0 Specifications
4.1 Electrical Specifications
4.2 Environmental Specifications
4.3 Mechanical Specifications
4.4 Shipping Settings
1.0 Introduction
1.1 Overview
The PST is complete, portable CW test source capable of transmitting
test signals in two bands simultaneously. The output from each band
can be enabled independently and level can be adjusted between –
10dBm and +10dBm in 0.1dB steps. Different transmitter models can
be configured to cover VHF, UHF, Cellular, GSM850, GSM900, iDEN,
PCS, GSM1800, GSM1900, UMTS bands.
The transmitter frequency and output level for each channel can be
set from the touch keys on the front panel. The transmitter status
can easily be monitored from the backlit LCD display. The touch-
screen on the display should be cared for properly. The transmitter
also contains an USB interface enabling the user to download spe-
cific transmitter configurations stored on a PC or control the transmit-
ter remotely.
The transmitter can be powered using the internal 6 AA recharge-
able batteries for 6 to 8 hours of continuous operation or from the
AC/DC wall adapter included.
1.2 Functional Description
The PST will power on to a splash screen with the Praxsym Logo, and
immediately proceed to the main operation screen. The previous
settings from the last use will be retained. The transmitter will not
power on transmitting RF energy, though it may have been powered
off previously while transmitting. The PST may safely be powered off
in any state using the ON/OFF button.
The PST is configured with channel spacing of many common wire-
less standards. Once the channel spacing is selected within the
Channel Setup menu, the step size may be adjusted from the main
operation screen. This function makes stepping across multiple chan-
nels quick and easy during testing.
PRACTICAL SYSTEMS TRANSMITTER
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2.0 Operation
2.1 Battery Charging
The PST transmitter is fully operational while the batteries are being
charged. Charging can occur whether or not the unit is powered on.
When “batt low” appears in the battery icon, the battery life is nearing
its end. The transmitter will shut down soon. Connect the AC/DC
adapter (12V /1.5A) to the unit’s CHARGE jack. Plug the adapter into
a wall outlet. An internal battery charger will control and terminate
the charging of the 6 NiMH cells within each unit. When beginning a
charge cycle with batteries which have been completely depleted,
allow about two and a half hours for a full charge to be restored. A
top-off charge is recommended immediately before use for maximum
battery life.
When the LED next to the charger jack turns green, the batteries are
nearly full and enter trickle charge mode. Continuing to charge when
the LED turns green for approximately an hour will give maximum
battery life. Fully charged batteries will give six to eight hours of use.
Also, the battery icon on the display will be completely darkened.
Though designed for many recharge cycles, the batteries are user re-
placeable. Use only Energizer® NH15 AA NiMH rechargeable batter-
ies, as supplied originally. Other AA battery types such as Alkaline or
Lithium Ion may result in damage to the transmitter.
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2.2 Keypad Definition
ON/OFF—Turns unit on or off
Numerals 0-9—Enter a new frequency, amplitude level or step size,
select corresponding menu item choice where applicable
SEL—Select. Toggles between frequency, amplitude and step size
on the main screen or chooses highlighted menu option in applica-
ble screens.
UP/DOWN ARROWS—Adjust frequency, amplitude or step size of
highlighted channel in the main screen using the arrows. Adjust-
ments to frequency are made in the set step size. In applicable
sub-menus, the arrows control selection of menu options.
PLUS/MINUS SIGNS— Change to a positive or negative amplitude
value
LOCK/DECIMAL POINT–Locks the keypad from any unintentional
changes. Indication of lock status is on the display during the
main screen only. The keypad may be locked and unlocked from
the main operation screen only. The Decimal Point is for use when
numerically entering a new frequency, amplitude or step size.
MENU—This brings up the Main Menu screen from the main opera-
tion screen, returns to main screen from Main Menu and back-
tracks through menus within sub-menu screens.
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PRAXSYM
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PRAXSYM
Ch. 1 Ch. 2
USB Port
Battery Charger jack & status LED
PRACTICAL SYSTEMS TRANSMITTER
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2.3 Display Definition
The tabs may be toggled between Frequency, Amplitude and Step
with the touch screen, with the size for both channels may be
active channel band noted at the top controlled using SEL to change
between the three, while the
arrow keys make adjustments
tothevalues
Touch screen control Numbers present Animation will run
of RF transmission indicate channels when either or both
which are transmitting channels are
transmitting
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PRAXSYM
Lock status of Indicates setting Battery Level
the keypad is which may be indicator
Indicated by adjusted using the
the padlock icon arrow keys
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2.4 Menu Navigation
Pressing the MENU button from the main operation screen brings
up the Main Menu. All transmitter settings are available from this
menu. Pressing MENU again from this screen returns to the main
operation screen.
Using the arrow keys will change the highlighted menu option.
SEL chooses the highlighted menu option. Pressing the corre-
sponding menu option on the keypad will also select menu op-
tions directly.
The Channel Setup options allow for setting of Frequency, Ampli-
tude and Step Size. Channel Information displaying minimum and
maximum values for frequency and RF power output are also avail-
able.
Display Settings contains user-selectable parameters for the dura-
tion of Backlight Timeout and also Backlight Level brightness.
System Settings contains options to change Baud Rate or Disable/
Enable Transmitting when the Frequency is changed. If Disable
On New RF is ‘ON’, the PST will not transmit when a new fre-
quency is entered. If a new step size does not require change of
frequency, the PST will continue transmitting.
Pressing the MENU button while in any menu screen will back-
track through the menu hierarchy. On all screens where menu
choices may be made, an option to return directly to the main
operation screen is present.
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