Installation Guide

120 20110-142 Gemini
PD
Installation Guide
20
Table 5 - Tests, Full & Half Channel Units
CHECKLIST
STEP ACTION EXPECTED RESULTS at 25°
°°
°C MEASURE WITH IF NOT?
Gemini
PD
units are set and characterized at the factory to optimize performances. It is not recommended to try to readjust the units.
1
Power-up LED
Sequence
as per
Table 1 - GeminiPD LEDs indications
2
Connect and save con-
fig
Press WinRIS
Get
button
as per section 4.4.2
3
Main transceiver Out-
put Power
Press
TX (Unmod)
UHF
: 40 watts
800MHz
: 35 watts
both +10%, -10%
Factory-settable down to 10
watts (5 watts for 800MHz
model) as per customer request
Service monitor set to
read power
or
50W in-line wattmeter
Refer to factory technical
support.
4
Main transceiver
Reflected Power
Press
TXON (Unmod)
<5% of forward power or as
specified by System Eng.
10W in-line wattmeter
Check for bad connec-
tions, damaged coax
cable, etc.
5
Carrier Frequency Er-
ror
Press
TX (Unmod)
±300 Hz Service monitor set to
read frequency error
Refer to factory technical
support.
SRRC4FSK
,
Full ch. unit:
25.6 kb/s: ±4.0 kHz (UHF)
±3.7 kHz (800MHz)
19.2 kb/s: ±4.5 kHz
SRRC4FSK
,
Half ch. unit:
16.0 kb/s: ±1.9 kHz (UHF)
±2.4 kHz (800MHz)
14.4 kb/s: ±2.3 kHz (UHF)
±2.7 kHz (800MHz)
Service monitor set to
read deviation
(IF filter set to Mid or
30 kHz position)
Refer to factory technical
support.
4
TX Deviation
Press
TXON (Modulated)
Carrier will be modulated
with a 1 kHz tone.
DGFSK
,
Full ch. unit:
19.2 and 16 kb/s: ±4.0 kHz
9.6 kb/s: ±3.0 kHz
DGFSK
,
Half ch. unit:
9.6 kb/s: ±2.5 kHz
Tolerance is +5%, -10% for all bit
rates.
5
RF Link test
"Ping" a base station
“Ping Successful”
as per section
4.4.5.6
Check on the WinRIS RSSI bar
graph if the base station is within
range (i.e. better than -107dBm)
or
Refer to factory technical support.
6 Set the service monitor to generate at the levels mentioned below. The carrier generated should be modulated with
a 1.0 kHz tone at deviation of +/- 4.0kHz (full ch.) or +/-2.5kHz (half ch.).
7
Main Receiver
RSSI checks
-70dBm
-110dBm
-120dBm
- 70 dBm +/-3
-110 dBm +/-3
-120 dBm +/- 3
WinRIS bar graph
Refer to factory technical
support.
The RSSI checks give a
good indication of re-
ceivers' health.