Holland Electronics NE 1100 - Manual (Page 11)

11
NE1100A2 CATV Optical Receiver Operation Manual
Relationship between dip switch # 1 and # 3:
1. When dip switch # 1 is ON, the receiver will automatically detect the pilot tone and
implement AGC automatic gain control.
2. If the dip switches # 1 and # 3 are both ON (AGC Mode), if no pilot tone is detected, it will
force the gain control mode to change to from AGC to MGC.
3. AUTO AGC ONLY: Setting dip switch # 3 to OFF and DIP switch # 1 to ON will prevent the
receiver from switching to the MGC mode. The receiver must not be allowed to switch to
MGC mode unless the MCG output level has been adjusted to be equal to the AGC output
level. Otherwise, the network signal level will be affected when the receiver switches from
AGC to MGC mode.
Note: The MGC level was preset at the factory and must not be
readjusted.
Appendix B
Relationship between dip switches # 2 and # 4
1. By setting dip switch # 2 to OFF (= optical input signal mode), and dip switch # 4 to ON ( =
auto Coax function), if at any time the receiver cannot detect an optical input signal it will
automatically switch from the optical input signal mode to the RF input signal mode.
2. To prevent the receiver from automatically switching from optical input mode to RF input
mode, set both dip switches # 4 and # 2 to OFF. The receiver will stay in the optical input
signal mode even if no optical input signal is detected.
4.4 Status Monitor Port