Technical Manual

120 20170-201 Paragon
PD
Technical Manual
23
High. The DMP protocol used requires that
DSR be normally asserted.
4.4.5.2 CTS signal is High indicator
The “Clear-to-Send” (CTS) indicator light, lo-
cated on the button bar (second indicator from
the left), is an RS-232 protocol port indication.
When lit, it indicates proper connection and that
the value is High. The DMP protocol used re-
quires that CTS be normally asserted.
4.4.5.3 Channel Selection
Paragon
PD
uses its default radio channel. No
channel selection being available, all channels
are grayed-out and the “Show All Channel Fre-
quencies” button is disabled.
4.4.5.4 TXON Tests
TXON test functions are selected by choosing
“Test” from the file menu, then “Modulated” or
“UnModulated” command or by pressing the
relevant button on the Toolbar.
4.4.5.4.1 Unmodulated Carrier
Unmodulated carrier gives a clear carrier and is
frequently used for checking:
• Frequency error
• Forward and reverse power
Press the TXON (Unmodulated) button to
transmit an unmodulated 20-seconds test signal
on the channel selected or until the button is
pressed again.
The functions of all the other buttons are inop-
erative during test transmissions.
Power check:
1- Connect an in-line power meter between the
radio and the antenna.
Measure the forward (nominal 40W for UHF
model and 35W for 800MHz model) and re-
flected power levels by powering TX ON (
<5%
of forward power or as specified by System
Eng.).
4.4.5.4.2 Modulated Carrier
Test transmission generates a carrier modulated
with 1kHz sinewave, at deviation level that de-
pends on model and network speed as shown in
Table 8.
This function is frequently used for checking
frequency deviation.
Press the TXON (Modulated) button to begin
transmitting a 20-seconds modulated test signal
on the channel or until the button is pressed
again.
The functions of all the other buttons are inop-
erative during test transmissions.
Table 8 – Carrier deviations for Tone or Data Modulation
Carrier Modulation
Tone Data
Network Speed
(b/s)
Typical deviation in
kHz
TX test tone in ( )
Absolute
Maximum
deviation *
in kHz
25kHz Channel Spacing (800MHz)
25600
± 3.7
(1000 Hz)
± 5.7
19200
± 4.3
(1000 Hz)
± 6.2
12.5kHz Channel Spacing (800MHz)
16000
± 2.4
(1000 Hz)
± 3.5
14400
± 2.8
(1000 Hz)
± 4.0
Full Channel (UHF)
25600
±4.0
(1000 Hz)
±6.0
19200
±4.5
(1000 Hz)
±6.5
Half Channel (UHF)
16000
±1.6
(1000 Hz)
±2.4
SRRC4FSK
14400
±2.0
(1000 Hz)
±2.9
Full Channel
19200
± 4.0
(1000 Hz)
± 4.7
16000
± 4.0
(1000 Hz)
± 4.7
9600
± 3.0
(1000 Hz)
± 3.6
Half Channel
DGFSK
9600
± 2.5
(1000 Hz)
± 2.9
* Deviation shown may seem higher than normal, however
they fall within the following appropriate FCC’s masks lim-
its: “C”,”G”,”D” or “H”.