Olson Technology CAN - Manual (Page 6)

025-000570 Rev. X7 www.olsontech.com 6
maximum gain, set S1 to “F” and the left switch of S2 down.
The right switch of S2 allows the LNB power to be switched on or off. When the switch is in
the “Off” position, no LNB voltage will be applied to J4. When the switch is in the “On” posi-
tion, LNB voltage from either J5 or J6 will be applied to J4. J1 & J3 allow easy measurement
of the transmitter optical output power using a Digital Volt Meter (DVM). J1 is a ground. J3
gives an indication of the laser power. The scale factor is 0.1V/mW. J2 is the optical output.
D1 indicates that the Laser Power is OK. It will be green if the laser control circuitry is be-
having normally. If the laser or control circuitry fails, then D1 will turn red.
D2 indicates the input RF Level. Figure 2 indicates the thresholds at which D2 will switch. D2
will be yellow if the RF level is below the low threshold, red if the RF level is above the high
threshold and green if the RF level is between the low and high thresholds. For most applica-
tions, if D2 is green, then the RF level is in the optimum range. J4 is the RF Input. It is a
high-frequency F-Type Female (75Ω) Connector.
Figure 2 - D2 Behavior
On the rear of the transmitter, connector J5 is used to connect to the OTAPS Advanced
L-Band Power Supply. When it is used, D3 and D4 give a local indication of the LNB voltage
and the 22kHz tones being generated in the OTAPS power supply. J6 and J7 are used when J5
is not used. J6 provides an alternate means of injecting an LNB voltage input via an “F” con-
nector. Connector J7 allows the unit to be powered via an “F” connector. Allowable input
power voltage is +8V
DC
to +24V
DC
. Connector J8 provides various status outputs. They will be
described in more detail later in this document. See Figure 5.
Note: If J5 is not used with the OTAPS power supply, the D3 LED’s will still give some indi-
cation of the LNB voltage. They are designed to switch at +15 Volts. The LNB voltage will only
be applied to the J4 connector when the right switch of S2 on the front panel is in the up or
“On” position.