Dataradio INTEGRA-H, Technical Manual

Page: 32 / 43

MAINTENANCE AND ADJUSTMENTS
3-3
Part No. 001-4090-101/102
1
(Unless you set a lower value). Note that readings less than 1 watt may be due to losses in the cables used for testing. Check
also your wattmeter frequency calibration curve.
2
In the RSS' Analog connector window, check the RX-TP box. (Accessed by clicking Settings and then Analog Connector).
3
If a psophometrically weighted filter is available on the service monitor, use 0.35
µ
V
.
Table 3-7 Tests and Adjustments
Step Action Expected Results Measure With If Not?
1 Output Power
1W
1
+ 5%, -20%
Service
monitor set to
read power Adjust using the RSS Power Out setting
(255 is the maximum) or refer to Factory
Tech support
2 Frequency Error
Press TX Unmod
300 Hz Service
monitor set to
read
frequency Adjust using the RSS Freq Warp setting.
(Typical adjustment range is 1.5kHz) If
found outside limits, call factory technical
support.
3 Deviation
Press TX tone
For any bit rate speeds
selected
Tol. +5%, -10%
For Full channel:
+8.0 kHz Service moni-
tor set to read
deviation with
mid(15-30 kHz)
IF filter Adjust using the RSS Deviation
setting (if required)
4 Carrier Sense
Inject a non-modulated
carrier at -120 dBm to the
Integra-H RF input;
Raise the service monitor RF
output until the CS LED
comes on
The CS LED should be off
The CS LED should come on within 2
dB from the value set by the INTRSS:
Default: approx. -105 dBm
(-110 in non-refarmed mode)
The threshold may be raised to prevent false
CS operation in the presence of noise,
intermodulation, or other sources of radio
interference (e.g., for ambient noise at -100
dBm (measured with a spectrum analyzer),
set the CS threshold for -95 dBm)
5 Set the service monitor to generate a -80 dBm signal on the selected receive frequency. The signal
should be modulated with a 1.0 kHz tone at deviation specified below.
Set service monitor IF filter to mid (15-30 kHz), no audio filter.
Note: Use test audio (pin 4) of the power/analog connector (white lead) for SINAD and distortion
2
6 Demodulated Audio
Press CHK
For any bit rate speeds
selected, set deviation to
+8 kHz
2 Vpp + 0.2
If read on Bar graph in
Radio Set-
tings
window
or
1 Vpp + 0.1
If read at Test audio pin 4 of PWR
analog connector Adjust using RXA adjust setting (if required)
7 12 dB SINAD
Set service monitor IF filter to
mid (15-30 kHz)
set deviation to +8 kHz
< 0.5
µ
V
3
Service monitor
set for
SINAD Refer to Factory Technical Support
8 Distortion
Set service monitor IF filter to
mid (15-30 kHz)
Deviation
level as per SINAD above
< 3%
Service monitor
set for
DISTORTION
Refer to Factory Technical Support