CALAMP WIRELESS NETWORKS INC. BDD4T881-3 ユーザーズマニュアル

General Check out (part2 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 unit may result in significant performance losses.

°°

Set the service monitor to generate on the selected receive frequency. Verify alternately for both receivers.

The carrier should be modulated with a 1.0 kHz tone at deviation level specified below:

8

(Dataradio wide band
measurement
method: no audio
filtering)

- For Full channel

unit, set deviation
to  ±3 kHz.

- For Half &

NPSPAC channel
unit, set deviation
to ±1.5 kHz

Better than  -108 dBm

including cable loss

(Typically -109 to -110 dBm)

- Backplane correspond-

ing to the receiver being
verified: SK1, Pin 6 (see

Figure 24

)

- Service monitor  (IFR)

set to SINAD

- IFR IF filter set to MID

position or 30 kHz wide
filter.

Refer to section 5.2.2

9

(Dataradio wide band
measurement
method: no audio
filtering)
- Set service monitor

RF Gen output to –
70 dBm

- Deviation level as

≤

 5.5 %

(Typically < 3.5 %)

- Backplane correspond-

ing to the receiver being
verified: SK1, Pin 6 (see

Figure 24

)

- Service monitor  (IFR)

set to SINAD

-

 

IFR IF filter set to
MID position or 30
kHz wide filter.

Refer to section 5.2.2

10

Apply to each
receiver input the
following RF level

UHF & 800/900Mhz:

 -110dBm

VHF: -100 dBm

UHF & 800 MHz:

2.0 VDC (+/- 0.3VDC)

VHF:
4.0 VDC (+/- 0.35VDC)

Note: BDLC must be

connected to the
radio during the
measurements

- Backplane correspond-

ing to the receiver being
verified: SK1, Pin 5 (see

Figure 24

)

- DC Voltmeter

measurement

Refer to section 5.2.2.5
for all models.

Refer to factory
technical support only if
RX data performance
degradation is noticed
combined with out of
tolerance RSSI
readings.