CALAMP WIRELESS NETWORKS INC. BDD4T85-2 ユーザーズマニュアル

Paragon-III  Technical Manual

1.  Remove the receiver (T885, T855) module from the Paragon-III rack frame

2.  Remove the receiver top cover (nearest the handle).

3.  Connect the Paragon-III Extender Rail Kit for Series II to the empty chassis receiver slot.

4.  Prepare the Multimeter to DC Volts.

5.  Apply power to the Paragon-III.

Single channel: Connect the Multimeter to either side of L504 (T885) or the long lead of L1

(T855) in the VCO (this measures the synthesizer loop voltage).

1.  T885 (800 MHz) Tune VCO trimmer CV500 for a synthesizer loop voltage of 10VDC.

2.  T855 (UHF) Tune VCO trimmer C6 for a synthesizer loop voltage of 10V DC.

Multiple channels (adjusting as shown for single channel above):

1.  T885 (800 MHz) Adjust the VCO loop to 10V using the middle frequency channel.

2.  T855 (UHF) Adjust the VCO loop to 10V using the middle frequency channel.

3.  All channels should lie within the upper and lower limits of respectively

All channels should lie within the upper and lower limits of 16V and 3V respectively for
the T885 and T855 or within 13V.

1.  IFR COM120B settings:

a)  Connect a 3 feet long double shielded cable (N-M to BNC-M) between the IFR T/R output and the

receiver antenna connector.

b)  Select the generator mode (GEN button) and set to the main receiver channel frequency

c)  Select and turn-on GEN2

d)  Set the FM Deviation to ±3kHz (full channel) or  ±1.5kHz (half channel) using 1KHz sine

e)  Select SINAD meter

f)  Use a X1 scope probe connected to SINAD input and monitor the Discriminator O/P on the back-

plane at SK1 pin 6 (RX-audio1). Alternately, it is also possible to monitor at the receiver I/O Pad
P207 (T885), the receiver TP314 (T855).

2.  Adjust the helical resonators for best SINAD: #H400, #H401 and #H900 (T885); #FL410 and #FL420

(T855).

3.  Continually decrease the RF level to reach 12dB SINAD, then re-do step 2) & 3) again. The absolute

minimum requirement level to reach is -108dBm (typical level is -109 to -110 dBm)

4.  Perform the SINAD linearity tests described in paragraph 5.2.2.4. If it fails to pass the requirement,

contact your Dataradio technical support.