Pico Macom PM45 User manual

PICO MACOM, INC.
PM45
The Pico Macom PM45 is a professional grade phase-locked loop synthesized
channelized-agile audio-video modulator.This modulator provides 45dBmV min-
imum output on CATV channels 2 to 125 (54-806 MHz) while accommodating
HRC and IRC offset frequencies. The PM45 features a composite audio-video
IF loop, which provides compatiblility with encoders, ghost cancellers, and
video-override applications.The unit can be reconfigured to any output chan-
nel by qualified service centers.This cost effective modulator can be used to
expand systems using PCM55, PCM555AW and PLM55 modulators beyond
300MHz, where the expansion does not require modulators with higher output
levels. The PM45 provides the greater frequency stability and higher adjacent
channel performance required in such expansions.The modulator is equipped
with a pre-emphasis disable switch which enables pass-through of high-fidelity
BTSC stereo signals where available. Its phase-locked loop frequency control,
and superior SAW filtering enhances stability, minimizes adjacent channel
interference and assures accurate and spurious free output. Superior out-of-
band carrier-to-noise performance is achieved through band-pass filtering at
the output amplifier.The PM45 is shipped with all internal adjustments preset.
FCC Docket 21006 offsets are standard. Pico Macom backs up this product
with its industry leading 5-year warranty.
PM45
806MHz Channelized-Agile PLL SAW-Filtered A/V Modulator
125-Channel Range
54-806 MHz (CATV 2-125)
45dBmV adjustable output for opti-
mum carrier-to-noise performance
Composite audio-video IF loop
provides compatibility with
encoders, ghost cancellers, and
video override applications
BTSC stereo compatible pre-
emphasis disable switch provides
pass-through for stereo signals
SAW filtered for superior adjacent
channel performance enables
drop-in channel expansion
Digital phase-locked loop (PLL)
design guarantees precise frequency
locking for solid drift-free operation
Front panel controls and test point
enables easy setup and monitoring
Audio and video over-modulation
indicators for quick performance
reference
In-band carrier-to-noise ratio >60dB
ensures superior picture quality
IRC and HRC offset available for
frequency settings in systems using
offset channels
Auxiliary AC outlet for convenience
806MHz Channelized-Agile PLL SAW-Filtered A/V Modulator
www.picomacom.com
Headend & Electronics
355 Parkside Drive San Fernando, CA 91340
Ph: 818-493-4300 Toll Free: 800-421-6511 Fax: [phone] A-11
Rev. 12/02

PM45
Channels: 125 Channels
(CATV 2-125)
Frequency Range: 54-806 MHz
IRC and HRC off-sets
Output Levels: 45 dBmV minimum
Output Adjustment Range: -15 dB
Spurious Output: -60 dB below video carrier
(@ A/V carrier ratio -15 dB)
Frequency Stability: ±5 kHz
Output Return Loss: -15 dB
Audio/Video Ratio: -7 dB to -25 dB
IF Output, Video: + 35 dBmV nominal
IF Output, Sound: + 20 dBmV nominal
Frequency Response: 30 Hz to 4.2 MHz ±1 dB
Input Level: 1.0 V p-p min for 87.5% mod.
Input Type: Clamped Video neg. sync.
Visual C/N: 68 dB @ 4 MHz BW
Hum and Noise: -60 dB @ 87.5% modulation
Differential Gain: 2% (10 to 90% APL)
Differential Phase: 2 Deg (10 to 90% APL)
Frequency Response: ±0.5 dB 30 Hz to 4 MHz
Group Delay: *See note
*NOTE: Meets FCC group delay predistortion correction
requirement for color transmission.
Power Input: 108 to 125 VAC 60 Hz 14W
Operating Temperature: -10° to 50° C
Dimensions: 19˝(L) x 5˝(D) x 13/4˝(H)
Weight: 5.3 lbs.
Fuse: 0.25 Amp.
Input Impedance: 10k ohms unbalanced
Input Level: 0.5 V p-p for 25 kHz peak
deviation
Pre-emphasis: 75 microsecond switchable
for BTSC stereo
Flatness: ±1.5 dB 50 Hz to 15 kHz
Composite BTSC Input Level: 500 mV to 1 Volt
RF Video
Audio General
Product Specifications
806MHz Channelized-Agile PLL SAW-Filtered A/V Modulator
AUDIO VIDEO MODULATOR
PM45
CH- VIDEO
ADJUST
VIDEO
OVER
MOD.
AUDIO
ADJUST A/V RATIO
AUDIO
OVER
MOD.
RF
ADJUST
CHANNEL SELECTOR
RF OUT
IF OUT
IF IN AUDIO IN
+ -
L GND R
VIDEO IN 600VA MAX AC117V
60Hz/14W
Front View
Rear View
Ordering Information
PM45 – Channel Specify CATV or UHF
www.picomacom.com
A-12
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.