PICO MACOM INC.
12500 Foothill Blvd. • Lakeview Terrace, CA 91342 • (818) 897-0028 • (800) 421-6511 • FAX (818)824-7197
D E S C R I P T I O N S
Specifications
(Specifications subject to change without notice)
3
Features
• Double heterodyne conversion provides
superior spurious harmonic output supres-
sion
• 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
can be changed by resetting the DIP switches
accessed through the front panel. High quality
external modulation 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.
Description
The PFAM-550SUB is a frequency agile
double heterodyne conversion audio/video
modulator. It's superior sideband filtering
provides adjacent channel compatibility 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 configuration
General
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
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
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
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
General
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
Audio
* One year warranty if sold outside U.S.A.
• 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
To Next Page
Loading...
