Technical Manual

120 20170-201 Paragon
PD
Technical Manual
27
Table 11 - Checklist B (General)
CHECKLIST B (Paragon
PD
)
General Check out (part1 of 2)
Paragon
PD
units are set and characterized at the factory to optimize performances.
It is not recommended to try readjusting units unless it is really required.
Misadjusting a unit may result in significant performance losses.
Step ACTION EXPECTED RESULTS at
25°
°°
°C
MEASURE WITH IF NOT?
1
Normal Power-up
Sequence
BDLC
PD
beeps once, all LEDs come ON for about four seconds, the green LEDs then flash in
a “ripple” pattern for close to two seconds. All LEDs go OFF except the CK that should flash 6
to 8 times per second. For functions, see section 3.2.1.2
2
Connect and save
unit config
Press WinRIS Get
button
as per section 4.4.2
3
Transmitter Output
Power
Press TX ON (Un-
mod)
VHF/UHF
: 100 watts
800
: 70 watts
+10%, -10%
Factory-settable down to 10
watts as per customer request.
Service monitor set to
read power
or
150W in-line wattmeter
installed as close as
possible to the unit
antenna connector.
Adjust “Power” on the front
panel of the “Power Amp”
( see Figure 8)
4
Transmitter
Reflected Power
Press TXON (Un-
mod)
<5% of forward power or as
specified by Syst. Eng.
10 W in-line wattmeter
Check for bad connections,
damaged coax cable, etc.
5
Carrier Frequency
Error
Press TX (Unmod)
< ±300 Hz
Service monitor set to
read frequency error
Adjust TCXO
(see inside Exciter module)
Figure 22 & Figure 35
SRRC4FSK modulation,
25kHz Ch. spacing (800):
25.6 kb/s: ±3.7 kHz
19.2 kb/s ±4.3 kHz
12.5kHz Ch. spacing (800):
16.0 kb/s ±2.4 kHz
14.4 kb/s ±2.8 kHz
Full Channel (UHF):
25.6 kb/s: ±4.0 kHz
19.2 kb/s: ±4.5 kHz
Half Channel (UHF):
16.0 kb/s ±1.6 kHz
14.4 kb/s ±2.0 kHz
6
TX Deviation
Press
TXON (Modulated)
Carrier will be
modulated with a 1
kHz tone.
DGFSK modulation,
Full Channel
19.2 and 16 kb/s: ±4.0 kHz
9.6 kb/s: ±3.0 kHz
Half Channel
9.6 kb/s: ±2.5 kHz
Tolerance is +5%, -10% for all
bit rates.
Service monitor set to
read deviation
(IF filter set to Mid or
30 kHz position)
Adjust according to Appendix 1
- ParagonPD Deviation adjust
on page 57
7
Low Frequency
Balance
Initiate a
TX Random data
test
via BDLC
PD
’s PF1
(See Table 3)
a) Record deviation level read
from step 6
b) Record deviation read from
TX Random test
c) Difference between a)
and b) must be:
< 500 Hz (2 FSK)
< 1.8 kHz (4 FSK)
Service monitor set to
read deviation
(IF filter set to Mid or
30 kHz position, all
audio filtering disabled
)
Refer to
Section 6.2.3.4 for Series I and
section 6.4.3.4 for Series II