Pico Macom PFAM-550SUB DESCRIPTIONs DESCRIPTIONs, Specifications, Features, Description, Video

PICO MACOM

DESCRIPTIONs

DESCRIPTIONs

Specifications

Features

•Double heterodyne conversion provides superior spurious harmonic output supression

•Channels T7 through 78 capable (5.75 to 550MHz)

•57 ±3 dB output, 5.75 to 550 MHz

•SAW filtered and I.F. loop

•Five year warranty*

•Supports HRC, IRC frequency offsets

•Factory aligned to FCC Docket 21006 for frequency offsets and stability

•Professional picture quality

•Front panel -30 dB test point

•Rear panel AC convenience outlet

Description

The PFAM-550SUB is a frequency agile double hetero- dyne conversion audio/video modulator. Its superior sideband filtering provides adjacent channel compat- ibility and FCC Docket 21006 frequency accuracy. The PFAM-550SUB provides 57 ±3 dB output from sub- band channel T7 through cable channel 78 including HRC and IRC off-set frequencies. The channelization

can be changed by resetting the DIP switches accessed through the front panel. High quality external modu- lation and RF level controls assure years of reliable operation. The modulator is shipped with all internal adjustments pre-set, and FCC Docket 21006 off- sets are standard at no extra cost. Pico Macom Inc. backs the product with a five year limited warranty. *

Specifications

RF

Channels:	89 channels (T7-T13, 2-78 & 95-99)
Output Level: 45 to 57 dBmV, adjustable from front panel
Output Impedance:		75 ohm
Output Return Loss:		15 dB
Audio/Video Ratio:		Adjustable -7 to -22 dB
		below visual carrier
Frequency Stability:	±5 KHz in aeronautical band.
	Conforms to FCC Docket 21006
Spurious Output:
(In-band) CATV channels:		-60dBc, A/V ratio @ 15dB
(In-band) Sub-band		-57 dBc, A/V ratio @ 15dB
(Out-of Band) F≤550MHz		-54 dBc, A/V ratio @ 15dB
C/N (In Band):		>58 dB
C/N (Out-of-Band):		>68 dB
Fv+6.5 MHz (Upper Adj. Reject):		>60 dBc
Fv-1.5 MHz (Lower Adj. Reject):		>60 dBc
I.F. Frequency:		45.75 MHz

Video

Input Level:	0.6 V p-p min for 87.5% modulation
Input Type:	Composite video negative sync
Frequency Response:	±0.8 dB	30 Hz to 4 MHz
Differential Gain:	<3%	(10 to 90%	APL)
Differential Phase:	<2°	(10 to 90%	APL)
Chrominance Luminance Delay:		<50 nsec
Hum and Noise:	-60 dB @ 87.5 modulation
Video Signal to Noise:	-60 dB minimum (weighted)
Input Level Range:	0.5 V to 1.5 V P-P

*One year warranty if sold outside U.S.A.

www.picomacom.com

Audio

Baseband Input Impedance:	600 ohms unbalanced
Baseband Input Level:	0.5 Vp-p for 25 kHz deviation
Pre-Emphasis:	75 microseconds
Flatness:	1.5 dB max. 50 Hz to 15 KHz

General

Power Input:	117 VAC, 60 Hz or 220 VAC, 60 Hz
Operating Temperature:		-10° C to +50°
Dimensions:		19” L x 12” D x 1.75” H
Weight:		8.2 pounds
Connectors:		All “F” type

(Specifications subject to change without notice)

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