User's Manual

P.G. TM0051
3-2
3.3 OPERATING AND MAINTENANCE INSTRUCTIONS
When powered, the unit will amplify signals in both the uplink and downlink bands.
The unit does not require any regular maintenance.
The internal independent uplink and downlink attenuators can be set by the DIP
switches on the bottom of the unit. Steps are available for 1 dB, 2 dB, 4 dB, 8 dB and
16 dB of attenuation. Setting the switch to "ON" inserts the corresponding attenuation
value. Refer to figure 3-1 for location of the uplink and downlink attenuator switches.
The green "POWER" LED indicates that the unit is receiving DC power and is
operating.
NOTE: The red "ALARM" LED indicates that the unit is being operated
above its rated downlink output power level. The operator MUST
then reduce the gain of the unit by increasing the "DOWNLINK"
attenuator setting such that the unit is operated within its downlink
power capability as specified in Table 1-2. (Refer to Note and Table
1-2 on page 1-3.) Levels should be measured at the
"DISTRIBUTION" port to ensure that the unit is operated within its
downlink power capability as specified in Table 1-2.
The downlink "ALARM" indicator and the uplink "ALC" circuit operate
at approximately +20 dBm composite output power which limits
interfering products below –13 dBm. Note that +20 dBm is higher
than the +16dBm output limit in Table 1-2 which MUST be adhered to
for proper linear multitone operation