Applications

Return loss bridges are useful in measuring VSWR, or return loss of filters, mixers, antennas and amplifiers. With directivity ratings of better then 45 dB, EAGLE bridges yield excellent results. The bridges may also be used for coupling two generators for inter-modulation testing, or power splitting for leveling systems.
All EAGLE bridges have a true RF output; they can be connected directly to vector or spectrum analyzers. Even spectrum analyzers contained in communications service monitors can be used. With the high degree of accuracy found in EAGLE bridges error correction is not absolutely necessary.

Description

The RLB251xx return loss bridge has been designed for lasting service in either laboratory or field service applications. Within its operational range this bridge yields laboratory performance in directivity and open/short ratio.
Covering a frequency range of .04 to 150 MHz this bridge will provide an excellent means of measuring VSWR in the supersonic, LF, MF, HF, VHF and FM broadcast band.
Each bridge is constructed in a brass case with nickel plating. Connectors are heavy duty and the "N" connectors have field replaceable center pins.
Power rating is a maximum of five watts up to one minute or 1.5 watt continuous.

Description-continued

These bridges have three ports: SOURCE, DUT (device under test) and REFLECTED. The REFLECTED port on all EAGLE bridges is an RF port. The bridge may be connected directly to a network or spectrum analyzer. There is no REFERENCE port as the bridge contains an internal 50 ohm reference.
To insure that high quality is maintained, each unit is thoroughly inspected, both mechanically and electrically. Critical components are 100% inspected and tested before assembly into the units.
After pretest the bridges are aged at 100 C and then retested. If the unit passes at this time it is sealed and, after cooling, retested to insure compliance with published specifications.

Quality

To insure that high quality is maintained each unit is thoroughly inspected both mechanically and electrically. All units are aged and then retested to insure superior stability over the lifetime of the instruments.

Availability

These units are normally stock items: 1 week delivery. Special orders or large quantities usually require 2-4 weeks.

Specifications

Please refer to next page for detailed specifications.

SPECIFICATIONS

Electrical

Freq. Range:

.05-150 MHz

Power Rating:

1.5W continuous
5W < 1min 5 min off
CAUTION: Do NOT Apply DC to any port.

Insertion Loss:

<7.0 dB SOURCE to LOAD port
<7.5 dB LOAD to REFLECTED

Port Match:

Source:
DUT:
Reflected:

>20 dB RL
>25 dB RL
>12 dB RL

Directivity

.04 to .1 MHz
.1 to 150 MHz

>35 dB RL
>45 dB RL

Open/Short
Ratio

<±0.7 dB

Environmental

Temperature:

+10 to +40C operational
-10 to +85 reduced specification
-55 to +125 storage

Humidity:

10-80% RH, non-cond

Shock:

Drop from 1"

Vibration:

100 G any Axis

Waterproof

No

SPECIFICATIONS-cont

Mechanical

Case Size

2.6"Wx4.5"Lx1.4"H no connector

Weight:

<12.0 Oz

Options

Connectors:

"BF"

BNC female Standard

'MF"

SMA female

"NF"

N female

Test:

TD

Test Data Plot

COC

Certificate of Conformance

Click on drawing for enlarged view