Bird Technologies 8630B Series - Manual (Page 29)

Installation
13
Model 8638 and
8638B
Model 8638 and 8638B - 3-1/8" unflanged, 50 ohm impedance. Refer
to Figure 5 while following the instructions below.
1. Use the Bird Coupling Kit P/N 5-726, consisting of two clamping
bands, an outer sleeve, and the center conductor coupling bullet.
2. Insert the center bullet, and bottom it on the midpoint nibs.
3. Position the outer sleeve, with clamps, over the input connector.
4. Introduce the transmission line and seat snugly against the
coupling stops.
5. Position clamp bands evenly about 1-3/4" apart, and tighten.
Preliminary
Equipment Check
Check the RF load for acceptable electrical condition. Refer to the
Maintenance Chapter for the procedure to determine load impedance.
Below is the test equipment needed, and the critical parameters.
Equipment Needed: Digital Multimeter
Accuracy: 1 percent at 50 ohms, ± 1 digit
Meter Rack The Meter Rack is used to hold the meter at the correct angle, for the
best possible viewing. Assemble and install as instructed below:
1. Assemble the kit using #6-32 x 1/4 screws, (supplied).
2. Remove the 2 screws from the panel at a desired mounting
location.
3. Mount the assembled Meter Rack using #8-32 x 3/8 phillips truss
(supplied). Refer to Figure 6.
Figure 5
Connecting RF
Power Model 8638
and 8638B
RF Coaxial Line Clamping Bands Connector Sleeve Bullet RF Load Connector