PRAXSYM DB-12 Bedienungsanleitung
CW Transmitter
User’s Manual
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
inspection appears to be a result of workmanship or material defect.
In no case, shall PRAXSYM's liability for breach of warranty exceed
the purchase 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.
120 S. Third Street
Fisher, IL 61843
Phone (217) 897-1744
Fax (217) 897-6388
www.praxsym.com
Table of Contents
1.0 Introduction
1.1 Overview
The Praxsym CW Transmitter is a portable continuous wave test
source capable of transmitting test signals on two channels
simultaneously. The output from each channel can be enabled
independently. The output level can be adjusted between -10 dBm
and +12 dBm, in 0.1 dB steps.
Each channel contains four
Setups
.
Setups
allow the user to program
up to four saved output configurations (frequency, amplitude, and
channel spacing) per channel. The transmitter also contains
Scan
Mode
which cycles through the
Setups
at an adjustable scan rate.
The transmitter frequency and output level for each channel can be
set from the touch keys on the front panel or from the touchscreen
display. The transmitter status can easily be monitored from the
backlit LCD display. The transmitter also contains a USB interface
enabling the user to control the transmitter remotely.
The transmitter can be powered using the internal 6 AA
rechargeable batteries for 6 hours of continuous operation or from
the AC/DC wall adapter included.
1.2 Functional Description
The transmitter 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 transmitter may
safely be powered off in any state using the ON/OFF button.
The transmitter is configured with channel spacing of many common
wireless 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
channels quick and easy during testing.
E
1.3 Items Supplied
D
C
A
B
Item Description
A CW Transmitter
With 6 Internal NiMH AA Batteries
B 12V 1.5A AC/DC Supply
C Power Cord
D USB Cable
E Flash Drive, Users Manual, Driver Software
1.4 Looking at the Transmitter
C
D
E
F
G
Item Description
A Channel 1 Output, N-Type Connector
B Channel 2 Output, N-Type Connector
C Battery Charger Status LED
D Battery Charge Jack
E USB Port
F LCD Touchscreen Display
G Front Panel, Touch Keys
B
A
2.0 Operation
2.1 Battery Charging
The 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 (12 V /1.5 A) 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.
A flashing red LED indicates a precharge state. Usually it will flash
for a few moments and then enter a fast charge state, indicated by a
solid red LED. The precharge state may last up to a few hours with
drained batteries and indefinitely if one or more cells have failed. All
cells must be replaced in the latter case. When the LED turns green,
the batteries are fully charged and enter trickle charge mode
indefinitely. Fully charged batteries will give six to eight hours of use.
Also, the battery icon on the display will be completely darkened. If
the AC/DC adapter is left connected to the transmitter, the charger
will initiate a new charge cycle once the batteries have discharged.
This will occur continually. Unless the transmitter is in operation, it is
not recommended to leave the AC/DC adapter connected for more
than 24 hours.
Though designed for many recharge cycles, the batteries are user
replaceable. Replace the batteries every 2-3 years. Use only
Energizer® NH15 AA NiMH rechargeable batteries, as supplied
originally. The internal charge circuit will only work with NiMH
rechargeable batteries. Attempting to charge other AA battery types
such as Alkaline or Lithium Ion will result in damage to the
transmitter.
Do not store the transmitter with discharged or failed batteries.
Discharged NiMH batteries can leak acid causing damage to the
transmitter.
2.2 Using Channel Setups
Each channel, 1 and 2, contain four
Setups. Setups
allow the user to
program up to four saved output configurations (frequency,
amplitude, and channel spacing) per channel. The
Setups
can be
accessed by repeatedly touching the tabs on the left side of the
display, depressing the 1 or 2 number keys, or by choosing
Channel 1
Setup
or
Channel 2 Setup
from the main menu.
When selecting the desired
Setup
from the home screen, pressing the
SEL (Select)
button toggles between frequency, amplitude, and step
size. The arrow keys change the values of the selected option. On
applicable transmitter models, touching the listed frequency band
allows for selection of a new band. These same changes can be made
from the
Channel 1 Setup
or
Channel 2 Setup
menu options in the
Main Menu
.
Touching
RF ON/OFF
or depressing the 0 key on the keypad will
enable and disable the RF output for the selected
Setup
.
Continuing to
touch the
channel tabs
will cycle
through the
Setups.
Setups
for
channel 1 can
also be changed
through the
Channel 1 Setup
Menu, likewise
for channel 2.
2.3 Scan Mode
Each channel, 1 and 2, can be independently set to
Scan Mode
. In
Scan Mode
, the transmitter cycles through the
Setups
at an adjustable
scan rate. The
Scan Mode
configurations are accessed through the
Channel 1 Setup
and
Channel 2 Setup
options in the
Main Menu
.
Selecting
Scan Setup
from the
Channel 1 Setup
menu portion displays
the various configurations associated with
Scan Mode
on channel 1,
likewise for channel 2.
Using the up/down arrows and
SEL (Select)
key will modify the scan settings
.
Selecting
Scan Order
allows the user
to choose which
Setups
will be used in the scan (AB, ABC, ABCD).
Selecting
Dwell Time
allows the user to select the duration at which
each
Setup
will be enabled. Selecting
Scan Armed
prepares the
transmitter to begin the
Scan
. The
Scan
, RF Output, will not be
enabled until
Scan ON/OFF
is pressed on the main screen. The Zero
key will also start the
Scan
.
Selecting The
Scan Setup
option available
in the
channel 1
Setup
menu,
modifies the
Scan
settings
The
Scan Setup
configurations
are available in
the
Scan Setup
menu.
After the scan is
armed, touching
SCAN ON-OFF
begins the scan
(enables the RF
output).
2.4 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
Numerals 1&2: From the main screen, pressing 1 or 2 will toggle
the LCD between channel 1 and channel 2 set up screens.
Pressing 1 while on the channel 1 will cycle between the four
channel
setups
. Likewise for channel 2.
Numeral 0: From the main screen, pressing 0 will toggle the RF on
and off or turn the SCAN on and off when the SCAN is armed.
SEL: Select. Toggles between frequency, amplitude and step size
on the main screen or chooses highlighted menu option in
applicable screens. Also the same as the “OK” touch screen
button.
UP/DOWN ARROWS: Adjust frequency, amplitude or step size of
highlighted channel in the main screen using the arrows.
Adjustments 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 when on 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
operation screen, returns to main screen from Main Menu and
backtracks through menus within sub-menu screens.
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