Bird - The RF Experts
3171B020
3171B and 3171B020, Dual Meter - Single Carrier, Wattcher RF Monitor
3171B020

3171B020, Dual Meter - Single Carrier, High-Speed Wattcher® RF Monitor
The 3170B020 is a two channel power monitoring system for use in 50 ohm coaxial transmission lines. Adjustable set points allow user to preset maximum reflected and minimum forward power trip points. Activated audible/visual alarms indicate an erroneous condition present on the transmission line. Corrective action can then be followed to either protect transmission equipment or restore transmission line to operational characteristics.

This power monitoring capability is accomplished through the use of a dual port 50 ohm in sertion type line section. Each port must contain a standard Bird plug-in element. Usually elements with a ten to one ratio is recommended for the forward and reverse power levels. The Wattcher monitoring system also provides additional terminal connections for user specific applications.

3171B and 3171B020, Dual Meter - Single Carrier, Wattcher RF Monitor
3171B020
Downloads:
product specifications:
Item No
3171B020
Item Name
Dual Meter - Single Carrier, High-Speed Wattcher® RF Monitor
Power Range
100 W to 250 kW using Bird® Plug-in Elements
Frequency Range
2 MHz - 1 GHz
Insertion VSWR
± 5% of full scale
Meter Scales
(FWD and RFL) 15, 30, 60 KW
Alarms
Front Panel Buzzer, "Active" and "Trip" LEDs for forward/reflected
Response Time
25 µs max.
Activate Forward
73 µs to 50 ms nominal (adjustable) monitor delay
Front Panel Controls
Reset push-button, adjust FWD/RFL alarm levels screw
Rear Panel Features
DC FWD/RFL signal inputs, main and remote meter drive outputs, external 12-16 VDC supply input, alarm in/out, reset in/out, AC line voltage selector, fuse, IEC 320 AC receptacle.
Inputs-Outputs
TTL compatible +5 V logic. Outputs for remote meter
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 @ 56 mA max.
DC Power
12.7 to 16.0 VDC @ 400 mA max.
Finish
Gray Powder Coat
Dimensions
(W x H x D)
19" x 5-7/32" x 9-21/64"
(483 x 133 x 237 mm)
Weight
5-1/2 lbs. (2.5 kg)
Elements
Two from tables 1-5/8 BB, 3-1/8 BB, 4-1/16 BB, or 6-1/8 BB
compatible devices:
Table 1-5/8BB - Standard Elements 30μA
1-5/8" Line Section - Standard Elements 30μA
Table 3-1/8BB - Standard Elements 30μA
3-1/8" Line Section - Standard Elements 30μA
Table 4-1/16BB - Standard Elements 30μA
4-1/16" Line Section - Standard Elements 30μA
Table 6-1/8BB - Standard Elements 30μA
6-1/8" Line Section - Standard Elements 30μA
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'