1
2
3
4
5
6
7
8
SWR Set
1. Turn Mode Selector Switch (#5 Fig. 1) to SWR-SET Position.
2. Turn SWR RF Level Control (#7 Fig. 1) to Min.
3. Key transmitter and turn SWR RF Level Control clockwise
(#7 Fig. 1) to give a full scale meter reading to Set Line on
the SWR Meter.
4. With Transmitter keyed, switch Mode Selector Switch (#5
Fig. 1) to the SWR position and read SWR ratio directly on
SWR Scale.
NOTE: The SWR Functions need to be performed on each
wattage range to prevent possible damage to the meter
movements.
Installation Instructions
The test center can be installed at any point in
your transmitter line.
Transmitter
RG/58BU
Input
Vert.
AUX 3rd ANT or
Dummy Load
Horz.
IMPORTANT
On the DOSY TC-4002-SW, be VERY careful if only one antenna
is used. Before the transmitter is keyed, make sure the antenna
switch (#1 Fig. 1) is in the proper position for desired antenna.
If this switch is in one of the other positions and the transmitter
sees an open load, the watt meter diodes may be damaged
and the transmitter may also be damaged.
Operating Instructions
Watts
The TC-4002-SW Test Center will indicate the power output (in
watts) of your equipment at the point in the transmission line
where you have installed the test center. To measure any
power from 1 to 2000 watts, just set the Mode Selector Switch
(#5 FIG. 1) to the appropriate range: 20, 200, 2000 watts.
If wattage to measure is larger than 2000 watts, the 2000/
4000 switch (#3 Fig. 1) must be switched to 4000. When
returning back to the 2000 watt scale, you must return the
switch (#3 Fig. 1) back to the 2000 watt setting.
NOTE: If power output is uncertain, use the highest range
and work down until the range is appropriate to prevent
possible damage to the meter movement.
DOSY Test
Center
RMS/Peak Watts
The RMS/PEAK mode switch (#2 Fig. 1) permits the selection
of either RMS or Peak Watt reading when measuring watts.
In the RMS position, there will be steady or very little movement
of the watt meter needle. When the RMS/Peak Mode Switch
(#2 Fig. 1) is in Peak position, watt meter will indicate peak
power output.
Antenna Selector Switch operation
(#1 Fig. 1)
1. VERT position for a VERT antenna or GR plane.
2. HORZ position for a HORZ antenna or BEAMS.
3. AUX position for a third antenna or a dummy load.
4. VERT/HORZ position ties in both VERT and HORZ antennas
to the transmitter input at the same time. Make sure (if
only one antenna is used) that the antenna selector switch is
in the same position as the antenna cable on the back of
the test unit.
1. Antenna Selector Switch
2. RMS/PEAK Mode Switch
3. 2000/4000 Watt Range
Switch
4. SET/MOD Switch
5. Mode Selector Switch
6. SSB/AM Mode Switch
7. RF Level Control
Modulation and SWR
Figure 1
