Attenuators, Coaxial Continuously Variable, DC-Low Freq.		See Also: Coax Attenuators, Variable Coax Attenuators, Variable, Med. High Power Coax Attenuators, Variable, Motor Driven Coax Attenuators, Fixed Coax Attenuators, Step W/G Attenuators, Fixed
ATM manufactures a wide variety of Continuously Variable, Level Set, and Low Frequency "CVA" Attenuators.  While there exists some overlap in performance between different models, careful review of the mechanical outline drawings and the corresponding tables should reveal the right model.  As always, please feel to call us and discuss your needs with one of our design engineers.
Note: Throughout this page "CVA" may be used to mean: Continuously Variable Attenuator.

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Low Frequency CVA - Multi-Turn Model
Features: • Continuously Variable Attenuation • Mechanical adjustment with screwdriver shaft and locknut [optional]. • Low Insertion Loss on all models • DC - 1 GHz models available • Attenuation 0-15dB min. ( 0-20dB Typ.) • SMA(F) Connectors Standard				AF02 GENERAL SPECIFICATIONS  ( All Options ) Mechanical Body: Aluminum Connectors: Stainless Steel Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072 Electrical RF Power: 0.5W average RF Connectors: Per order, see information below. Environmental Temperature: -24 to +70C
Standard Model (click photo above for outline .pdf) Standard Model with Locking Collar (click photo above for outline .pdf)
Freq. (MHz)	Atten. Range (dB)	Insertion Loss (dB) max.	Flatness +/- (dB)		VSWR max.	Standard Model 50 Ohm (SMA)	Outline drawing
							Standard Model	Locking Collar Model
DC - 100	0-15	0.5	0.5		1.8	AF020-15	.pdf	.pdf
DC - 200	0-15	0.5	0.5		1.8	AF021-15	.pdf	.pdf
DC - 500	0-15	0.5	1.0		1.8	AF022-15	.pdf	.pdf
DC - 1000	0-15	1.0	1.5		1.8	AF023-15	.pdf	.pdf
Ordering Information Ser Opt Mod - Ohm CVA, Low Frequency         Example part number:  AF 0 22 -15/75 Series: (Ser)         Drive Options: (Opt) 0=Standard 8=Turns Counting Dial L=Locknut       Basic Model No.: (Mod)     Ohms Rating.: (-Ohm) -15 =50 Ohms -15/75 =75 Ohms   * The Standard Model Numbers above are the most common parts ordered for frequency and connector. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.

 

 

Low Frequency CVA - Multi-Turn Model
Features: • Continuously Variable Attenuation • Mechanical adjustment with screwdriver shaft and locknut [optional]. • Low Insertion Loss on all models • DC - 1 GHz models available • Attenuation 0-15dB min. ( 0-20dB Typ.)				AF03 GENERAL SPECIFICATIONS  ( All Options ) Mechanical Body: Aluminum Connectors: Stainless Steel Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072 Electrical RF Power: 0.5W average RF Connectors: Per order, see information below. Environmental Temperature: -24 to +70C
Standard Model (click photo above for outline .pdf) Turns Counting Dial Option (click photo above for outline .pdf) Standard Model w/ BNC Connectors
Freq. (MHz)	Atten. Range (dB)	Insertion Loss (dB) max.	Flatness +/- (dB)		VSWR max.	Model No. 50 Ohm (SMA)	Model No. 75 Ohm (BNC)**
DC - 100	0-15	0.5	0.5		1.8	AF030-15	AF030-15/75/BF
DC - 200	0-15	0.5	0.5		1.8	AF031-15	AF031-15/75/BF
DC - 500	0-15	0.5	1.0		1.8	AF032-15	AF032-15/75/BF
DC - 1000	0-15	1.0	1.5		1.8	AF033-15	N/A
Ordering Information Ser Opt Mod - Ohm /Con CVA, Low Frequency           Example part number:  AF 0 32 -15/75 /BF Series: (Ser)           Drive Options: (Opt) 0=Standard 8=Turns Counting Dial L=Locknut         Basic Model No.: (-Mod)       Ohms Rating.: (-Ohm) -15 =50 Ohms -15/75 =75 Ohms     Optional Connector: (/Con) For standard connector (SMA-F) leave this option blank /BF=optional BNC (female) connectors   * The Standard Model Numbers above are the most common parts ordered for frequency and connector. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.   **BNC-F are standard connector type for 75 ohm Models.   View Locknut Option .pdf

 

 

Low Frequency CVA - Single-Turn Model
• Continuously Variable Attenuator • Mechanical adjustment with screwdriver shaft and locknut. • Low Insertion Loss on all models • DC - 1 GHz models available • Attenuation 0-15dB min. ( 0-20dB Typ.)
(click photo above for outline .pdf)			AF04 GENERAL SPECIFICATIONS ( All Options )
			Mechanical Body: Aluminum Connectors: Stainless Steel Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072 Electrical RF Power: 0.5W average RF Connectors: 50 ohm models: SMA Female (for BNC add ''/BF'' to P/N) 75 ohm models: BNC Female (for SMA drop the ''/BF'' from P/N) Connector Options: Type-N and other connectors available. Configuration Options: Connectors can be mounted on rear by adding "/RM" to P/N Environmental Temperature: -24 to +70C
Freq. (MHz)	Atten Range (dB)	Insertion Loss (dB) max.	Flatness +/- dB	VSWR max.	Model No. 50 Ohm (SMA)	Model No. 75 Ohm (BNC)
DC - 100	0-30	1.0	1.0	1.8	AF040-30	AF040-30/75/BF
DC - 200	0-30	1.0	1.5	1.8	AF041-30	AF041-30/75/BF
DC - 500	0-30	1.0	1.5	1.8	AF042-30	AF042-30/75/BF
DC - 1000	0-30	3.0	N/A	1.8	AV043-30	N/A

 

 

 

Low Freq. CVA - Single-Turn Model, with Calibration Dial
• Continuously Variable Attenuator • Knob Control with Calibration Dial calibrated in 2dB increments. • Low Insertion Loss on all models. • RF Connector: SMA Female, BNC connectors available. • Rear mounted connectors available as an option.
(click photo above for outline .pdf)			AF05 GENERAL SPECIFICATIONS ( All Options )
			Mechanical Body: Aluminum Connectors: Stainless Steel Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072 Electrical RF Power: 0.5W average RF Connectors: 50 ohm models: SMA Female (for BNC add ''/BF'' to P/N) 75 ohm models: BNC Female (for SMA drop the ''/BF'' from P/N) Connector Options: Type-N and other connectors available. Configuration Options: Connectors can be mounted on rear by adding "/RM" to P/N Environmental Temperature: -24 to +70C
Freq (MHz.)	Atten Range (dB)	Insertion Loss (dB) max.	Flatness +/- dB	VSWR max.	Model No. 50 Ohm (SMA)	Model No. 75 Ohm (BNC)
DC - 100	0-30	1.0	1.8	1.8	AF050-30	AF050-30/75/BF
DC - 200	0-30	1.0	1.8	1.8	AF051-30	AF051-30/75/BF
DC - 500	0-30	1.0	1.8	1.8	AF052-30	AF052-30/75/BF

 

 

 

Low Freq. CVA - PC Mounted
• Continuously Variable Attenuator • Multi-Turn Shaft Control • Dust proof enclosure Low Insertion Loss on all models • DC - 1000 MHz models available • Click on photo below for Outline Drawing (.pdf)
(click photo above for outline .pdf)			PC MOUNT GENERAL SPECIFICATIONS
			Electrical RF Power: 0.5W average RF Connectors: 2 RF leads Environmental Temperature: -24 to +70C
Freq (MHz)	Atten. Range (dB)	Insertion Loss (dB) max.	Flatness +/- dB	VSWR max.	Model No. 50 Ohm	Model No. 75 Ohm
DC - 300	0-15	0.5	1.0	1.8	AV0PC2-15-50	AV0PC2-15-75
DC - 850	0-15	0.5	1.5	1.8	AV0PC3-15-50	AV0PC3-15-75
DC-1000	0-15	1.0	1.8	1.8	AV0PC4-15-50	AV0PC4-15-75

 

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