Bird - The RF Experts
3126A
3126A, 3127A and 31278A Single Carrier, Wattcher RF Monitors
3126A

3126A, Single Carrier, Wattcher® RF Monitor
When installed with a dual port Thruline Line Section and two elements, is designed for the protection and monitoring of radio frequency transmission systems. The line section is selected to be compatible with the RF coaxial line used in the transmission system.

The elements are selected by the user to cover the desired power levels and frequency ranges. Purpose and Function Abnormal loading conditions cause the transmitter to quickly shutdown, a user selectable audible alarm to sound, and an alarm LED to flash. Remote access is available for resetting audible and visual alarms. Fail-safe or non fail-safe modes are user selectable and the reflected power trip level is adjustable.

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3126A, 3127A and 31278A Single Carrier, Wattcher RF Monitors
3126A
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product specifications:
Item No
3126A
Item Name
Single Carrier, Wattcher® RF Monitor
Power Range
300 W to 60 kW using Bird® Plug-in Elements
Frequency Range
2 MHz - 1 GHz
Insertion VSWR
Accuracy
± 5% of full scale
Meter Scales
(FWD) 5, 30, 60 kW
(RFL) 1.5, 3, 6 kW
Meter Sensitivity
100 µA/3000 ohm
Alarms
Front Panel Buzzer and Red LED
Response Time
Activate Forward
Front Panel Controls
Reset push-button, reflected power limit display button, adjust alarm level recessed screw
Rear Panel Features
FWD/RFL DC signal inputs (BNC), DC power/remote reset connector, DPDT interlock relay connector, fail-safe/nonfail-safe selector, alarm buzzer disable, AC line voltage selector, safety fuses and IEC 320 AC receptacle.
Inputs-Outputs
Cables
Includes (2) 25 ft. DC Cables
If length other than 25 ft. is desired, order two BNC (M) cables
AC Power
115/230 V, 50/60 Hz @ 0.125 A max.
DC Power
9 to 16 V @ 1 A max.
Connectors
Finish
Gray Powder Coat
Dimensions
(W x H x D)
19" x 5-7/32" x 3-3/4"
(483 x 133 x 95 mm)
Weight
5 lbs. (2.28 kg)
Required Products
Line Section: 1-5/8", 3-1/8", 4-1/16", 6-1/8"
Calibration Cycle
Elements
Two from tables 1-5/8 B, 3-1/8 B, 4-1/16 B, or 6-1/8 B.
Note
compatible devices:
Table 1-5/8B - Standard Elements 100μA
1-5/8" Line Section - Standard Elements 100μA
Table 3-1/8B - Standard Elements 100μA
3-1/8" Line Section - Standard Elements 100μA
Table 4-1/16B - Standard Elements 100μA
4-1/16" Line Section - Standard Elements 100μA
Table 6-1/8B - Standard Elements 100μA
6-1/8" Line Section - Standard Elements 100μA
4715-000
1-5/8" Thruline Line Section
4723-000
1-5/8" Thruline Line Section
4723-020
1-5/8" Thruline Line Section
4610-000
3-1/8" Thruline Line Section
4801-100
3-1/8" Thruline Line Section
4802-000
3-1/8" Thruline Line Section
4905-000
6-1/8" Thruline Line Section
4909-000
6-1/8" Thruline Line Section
accessories:
3170-058-1
Cable Assy, DC/BNC (M), 14"
3170-058-5
Cable Assy, DC/BNC (M), 50'
3170-058-9
Cable Assy, DC/BNC (M), 100'