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
a s s u r e y e a r s o f r e l i a b l e o p e r a t i o n . T h e
m o d u l a t o r i s s h i p p e d w i t h a l l i n t e r n a l
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
