Pico Macom PFAM550MT User manual

Pico Macom’s PFAM-MT series are frequency agile professional re-broad-
cast grade, microprocessor controlled CATV modulators.The PFAM-MT series
features a composite audio-video IF loop, which provides compatibility with
encoders, ghost cancellers, and video-override applications.The phase-locked
loop frequency control, double heterodyne conversion, and superior SAW
filtering minimize adjacent channel interference and assure accurate and
spurious free output.The PFAM550MT provides over 62dBmV output from
CATV channels 2 to 78 including channels 95 to 99 (54-550 MHz) while
accommodating HRC and IRC offset frequencies.The PFAM860MT
expands this frequency range to 860MHz, covering CATV channels 2-135.
Channel selection is accomplished via channel up/down buttons located on the
front panel while built-in RF muting circuitry prevents interference during online
channel reassignment. Rear-panel connectors accommodate both BTSC
composite (MPX) and 4.5MHz stereo insertion.The modulator is shipped
with all internal adjustments preset.The unit conforms to FCC Docket
21006 for frequency accuracy. Pico Macom backs up this product with its
industry leading 5-year limited warranty.
PFAM-MT Series
CATV Microprocessor-Control Agile A/V Modulators
135 Channel Range (PFAM860MT)
54-860MHz (CATV 2-135)
82-Channel Range (PFAM550MT)
54-550 MHz (CATV 2-78, 95-99)
Re-broadcast quality specifications
exceed those of fixed channel modulators
60 dBmV minimum output for optimum
carrier-to-noise performance
Composite and separate audio and video
IF loops allow compatibility with
encoders, ghost cancellers, and video
override applications
Microprocessor control enables digital
push-button channel selection for ease
of installation, configuration, and servicing
State-of-the-art digital phase-locked
loop (PLL) design guarantees precise
frequency locking for solid drift-free
operation
Digital display provides quick channel
identification
Front panel controls and test point enable
easy setup and monitoring
SAW filtered for superior adjacent chan-
nel performance enables drop-in channel
expansion
In-band carrier-to-noise ratio >65dB
ensures superior picture quality
Tracking filter technology improves overall
system carrier-to-noise performance
Superior design including automatic
band splitting filters for superior carrier-
to-noise ratio
CATV Microprocessor-Control Agile A/V Modulators
www.picomacom.com
Headend & Electronics
355 Parkside Drive San Fernando, CA 91340
Ph: 818-493-4300 Toll Free: 800-421-6511 Fax: [phone]
A-23
Rev. 12/02
PFAM-MT
Series

PFAM-MT Series
Channels: PFAM550MT 82 channels (2-78 & 95-99)
PFAM860MT 135 channels (2-135)
Frequency Range: 54-550 MHz & 54-860Mhz
Output Level: 60 dBmV min., 62 dBmV typ.,
adjustable from front panel
Output Impedance: 75 ohms
Output Return Loss: 15 dB
Audio/Video Ratio: Adjustable -7 to -22 dB below
video carrier
Frequency Stability: ±5 kHz in aeronautical band
Spurious Output: -60 dB below video carrier
with A/V ratio @ -15 dB
C/N (In-Band): >65 dB
C/N (Out-of-Band): >70 dB
Fv+6 MHz (Upper Adj. Reject): >60 dBc
Fv-1.5 MHz (Lower Adj. Reject): >60 dBc
I.F Frequency: Video 45.75 MHz
Audio 41.25 MHz
Input Level: 1.0 Vp-p min for 87.5% mod.
Input Type: Clamped video neg. sync
Frequency Response: ±0.8 dB, 30 Hz to 4.2 MHz
Differential Gain: <5% (10 to 90% APL)
Differential Phase: <5° (10 to 90% APL)
Chrominance luminance delay: *See note
Hum and Noise: -60 dB @ 87.5% modulation
Video Signal to Noise: -60 dB minimum (weighted)
Input Level Range: 0.5 V p-p to 1.5 V p-p
*NOTE: Meets FCC group delay predistortion requirements for
color transmission.
Power Input: 120 VAC, 60 Hz, 28 W
Operating Temperature: -10° C to + 50° C
Dimensions: 19˝(L) x 9˝(D) x 13/4˝(H)
Weight: 8.2 lbs.
Connectors: RF & Video “F”type
Audio Terminal strip
Baseband Input Impedance: 600 Ohms unbalanced
Baseband Input Level: 0.5 V p-p for 25 kHz peak dev
Pre-emphasis: 75 microseconds
Flatness: Left Audio 1.5 dB max. 50 Hz to 15 kHz
Right Audio 1.5 dB max. 50 Hz to 15 kHz
RF Video
Audio General
Product Specifications
CATV Microprocessor-Control Agile A/V Modulators
AGILE AUDIO VIDEO MODULATOR
PFAM550MT
OVER
MOD VIDEO ADJ
VIDEO
AUDIO
ADJ OVER MOD
AUDIO
VIDEO/AUDIO
RATIO
OFFSET
STD
HRC
+25K
+12.5K CHANNEL
SELECT
-30dB
TEST
POINT
RF
LEVEL
RF
OUTPUT
RF OUT COMP IF
OUT
VIDEO IF
IN
AUDIO IF
IN VIDEO IF OUT
AUDIO IF
OUT
4.5MHz
IN
VIDEO
IN
COMP IF
IN
LEFT
AUDIO
RIGHT
AUDIO
GND.
117VAC
60Hz 38W
600W MAX
125VAC
0.5A
CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD, REPLACE ONLY WITH SAME TYPE 0.5A 125V FUSE
FUSE
Front View
Rear View
Ordering Information
PFAM550MT
PFAM860MT
www.picomacom.com
A-24
Rev. 12/02 355 Parkside Drive San Fernando, CA 91340
Ph: 818-493-4300 Toll Free: 800-421-6511 Fax: [phone]
Specifications Subject to Change © Copyright 2003 Pico Macom, Inc.