User's Manual

INSTALLATION GUIDE
Confidential, Proprietary Information
Title: PolBEAMER PCS (3.2) Array System-
Assembly and Operation Manual
Doc. No.:
913000801
Rev.: 01
Page: 45 of 91
2.8.4.4. Configuring and Defining the System Properties
The previous commands configured the ICU controller to recognize the installed array and
BEAMER® modules. The procedure described above should be repeated for every installed array (up
to three arrays can be supported with a single ICU). The following commands define the system
properties, and are independent of the number of installed arrays. These system properties define the
alarm and shut-down conditions and limit for both BEAMER® and ICU. Setting the BEAMER® and
ICU limits affects the status reading received when issuing the read status commands (i.e. 'read ICU
status' (30), 'read BEAMER® status' (29), 'read array status' (28) and 'read Bias-T status' (19)).
2.8.4.4.1. Setting the BEAMER® Limits
Another means to control the failure conditions, built-in the BEAMER® controller, is the 'save
BEAMER® limits' command (code 20). This command sets the range for which a failure is declared.
These values can be changed to the customer's preferences, in conjunction with the failure conditions
declaration (code 26.).
The following table contains Celletra's recommendations for the BEAMER® module limits conditions:
Table 4: BEAMER® limits recommended settings
Description Recommended
Value (decimal)
Meaning
Temperature min 2
-20°C
Temperature max 20
+70°C
Input power min 4 -14dBm
Input power max 15 -3dBm
Output power min 2 22dBm
Output power max 14 34dBm
Tx attenuator min 0 0dB
Tx attenuator max 31 15.5dB
Main Rx attenuator min 0 0dB
Main Rx attenuator max 31 15.5dB
Div Rx attenuator min 0 0dB
Div Rx attenuator max 31 15.5dB
BEAMER® supply voltage min 118 13VDC
BEAMER® supply voltage max 255 28VDC
2.8.4.4.2. Setting ICU Limits
Similar to the command for the BEAMER® limits, commands 'save ICU limit' (code 22) and 'save
Bias-T limits' (code 24) set the limits for the ICU, determining the failure conditions.
These limits can be changed to the customer preference (up to a given, reasonable range). The
following table sets the recommended limits for the ICU and the Bias-T.