Installation Manual

120 20110-141 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
config
Press WinRIS Get
button
as per section 4.4.2
3
Main transceiver
Output 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 watt-
meter
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 watt-
meter
Check for bad connec-
tions, damaged coax
cable, etc.
5
Carrier Frequency
Error
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
19.2 kb/s: ±4.5 kHz
4
TX Deviation
Press
TXON (Modulated)
Carrier will be modu-
lated 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.
Service monitor set
to read deviation
(IF filter set to Mid
or 30 kHz position)
Refer to factory technical
support.
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 modu-
lated 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.
8
Aux Receiver
repeat as per step 7
same as step 7 WinRIS bar graph
Refer to factory technical
support.
1 (unless you have set a lower value). Note that readings less than 40 watts (UHF model) or 35 watts (800MHz model) may be due
to losses in cables used for testing. Check also your wattmeter frequency calibration curve. Do not be too ready to condemn the
transmitter.