PDI-60M
860 MHz Frequency Agile 60 dBmV SAW Filtered Modulator

EN ESPANOL

PDI-60M Modulator
Description Features Specifications  
DESCRIPTION
The PDI-60M is a PLL synthesized, SAW filtered, frequency agile modulator. It offers 133 TV channels at an output of 60dBmV. This exceptional unit is manufactured and tested to the highest standards and complies with all FCC requirements. The PDI-60M covers all cable channels from 2 through 134 (54-860MHz) including A-5 to A-1 and HRC. Channel selection is accomplished with "user friendly" up/down controls on the front panel. The selected channel is then automatically locked into memory to insure correct operation after a power failure. For flexibility in operation the PDI-60M has three IF loops. These can be used where control of video, sound, or composite signals are necessary such as scrambling, and /or emergency alert insertion. A 4.5MHz audio carrier input is supplied for microwave or external stereo. An optional internal stereo encoder is available.
FEATURES
+60dBmV RF output level
Microprocessor Up/Down button to select output channel in the range of 2 to 134 (54-860MHz) including A-5 to A-1 (95 to 99)
FCC offset externally selectable, 0kHz, +12.5kHz or +25kHz
>-60dB spurious performance at a video output level of 60dBmV
Professional grade SAW vestigial sideband filter for true adjacent channel operation
Three loop-through connections for separate video, audio or composite IF control
4.5MHz audio carrier Input for microwave or external stereo
HRC available
5 year warranty
UL Listed Canada/U.S.
ISO 9002 certified
Comcast Corporate Approved CIFA #7648
OPTION 1: Internal Stereo Encoder
OPTION 2: Internal Stereo Encoder and SAP Generator
Also available in all PAL configurations
SPECIFICATIONS
RF SECTION
Output Channels UP/DOWN Selectable 2 Through 134 and A-5 to A-1.
Output Level +60dB Range
Output Level Adjustment 20dB Range
Spurious Output At least 60dB Below Video Carrier
(@ +60dBmV Output With Aural Carrier 15dB Down)
Broadband Noise 80dB Below Video Carrier (@ +60dBmV Output)
Frequency Stability ±5kHz Maximum (±3kHz typical)
Vestigial Sideband Response -20dB at IF Channel Edge; -60dB at Adjacent
Video and Aural Carrier Frequencies and Frequencies Further Removed
VIDEO SECTION
Input Type Composite Video, Negative Sync.
Input Level 0.5 Vp-p Min. for 87.5% Depth of Modulation
Frequency Response +0.75dB (10Hz to 4.2MHz)
Differential Gain 3% Typical at 87.5% Modulation
Differential Phase <3 Degrees Typical at 87.5% Modulation
Hum and Noise -60dB Min. at 87.5% Modulation
Tilt 1.1% Maximum on 60Hz, 50% Square Wave
Group Delay Response Meets FCC Distortion Requirements for
Color Transmission
AUDIO
Input Type Unbalanced (Balanced optional)
Input Impedance 600 ohms
Input Level 250mV Min. for 25kHz Deviation
Frequency Response Mono ±0.75dB (30Hz to 15kHz)
Intercarrier Frequency 4.5MHz ±100Hz
SAP OPTION: Second Audio Program
Input Impedance 22K or 600 ohm when CN6 is jumpered with a 2 pin shorted header
FM Oscillator At 78.670 KHz is phased locked for stable output
Carrier Output Has a bandpass filter (LC) circuit with traps at 63KHz and 94KHz to reduce SAP signal getting back into main Stereo Board
Compander 2:1 with dbx® noise reduction
SAP CARRIER KILL SAP signal can be shut off with the SAP switch at the front of the unit
OPERATIONAL
AC Line and Power 85 - 256 Vac, 60Hz, 25 Watts
High efficiency switching mode power supply
Operational Temperature 0 to 50 Degrees C
Rear Panel Connections
RF Output F female
Video Input F female
Audio Input Terminal (stereo units RCA)
4.5MHz Audio F female
IF Loops F female
Front Panel Controls UP/DOWN Channel Select
CATV/HRC Mode Select
RF Output Level
Aural Carrier Level
Video Modulation Depth
Audio Deviation
Carrier Offset
Front Panel Indicators Power On LED
3 Digit Channel Number
Rear Panel Controls Baseband Stereo Switch
4.5MHz Audio Carrier Switch
 
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