Transcom

 Technalogix TP300 Processor


The TP300 contains the latest in television electronics, including synthesized crystal- referenced phase-locked-loop oscillators, microprocessor control, SAW-filtered IF and hybrid amplifiers. In addition to these features, it contains automatic input offset programming to remove input offset programming to remove input offsets inherent to off-air channels (0, 10 KHz), cable standard channels (0, +12.5 KHz, +25KHz) and cable HRC channels (0.3 KHz master oscillator offset).

Standard Features

Totally microprocessor Controlled with self-diagnostic monitoring

Selectable Input channels
Off air channels 2 through 69 (VHF and UHF)
Standard cable channels 2 through 125 (54MHz-826MHz)
HRC channels 1 through 125
Optional T7 - 14 (with 'T' option)
 

Selectable Output channels
Standard cable channels T7 through 118 (7 MHz- 756 MHz)
HRC channels 1 through 118
Off-Air 2-69 (with 'U' option)
Automatic input offset control
 

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Unique circuit detects and corrects Input Signal offset frequency for Heterdyne processing before the IF

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SAW filtered IF designed for adjacent channel operation
+60 dBmV output using low-distortion hybrid amplifiers

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Non-volatile channel memory

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Synthesized oscillators

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Crystal referenced phase locked

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Digital LED readout

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External IF loop

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Internal switch selects standard or HRC output

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Surface mount Technology construction

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RF muted during tuning

 

RF Characteristics

Frequency range 7 to 750 MHz
Frequency Response ( one channel) 0.5dB
Frequency Tolerance 1 Hz
Frequency Stability 250 KHz
RF Output level 60 dBmV max
Output Impedence > 60 dB below rared power
Harmonics 50 Ohms, unbalanced

Predominant intermodulation products dBc= decibels below visual
+920 KHz carrier
- 920 KHz >-53 dBc
+2.66 MHz >-53 dBc
- 2.66 MHz >-53 dBc
+5.42 MHz >-53 dBc
+7.16 MHz >-53 dBc

3 rd Order Intermodulation Products >-53 dBc
-4.5 MHz
+9.0 MHz >-60 dBc
All >-60 dBc
Others >-60 dBc
Return loss >14 dB

Spurious Emissions >-60 dBc

NTSC Video Characteristics
Input: C3F Neg NTSC
Input impedance 75 Ohms, unbalanced
Input frequencies 7 to 800 MHz
Off-air channels 54 to 890 MHz
RF bandwidth 6.0 MHz
Input AGC range -16 to +16 dBmV
Input AGC type Sync Tip ref.
Recommended input 0-10 dBmV, +60 to +70 dBV
Noise figure 9Db VHF, 10dB UHF
Adjacent channel rejection 60dB
Image rejection 60dB
Audio carrier adjustment range Flat response to -10 from
below the video carrier input levels

IF Section
Video IF Level +37 dBmV, +97 dBV
Audio IF level +22 dBmV, +82 dBV
Return loss >14 dB
IF frequency, Video carrier 45.75 MHz
IF frequency, Audio carrier 41.25 MHz
Video Sound spacing +4.5 MHz
Vestigial side-band width 0.75 MHz
Return loss >14 dB
IF frequency 45.75MHz

Physical Characteristics
Lightweight Enclosure 11 lbs
Minimal rack space 1.75"H X 14" D X 19" W
Operating temperature 0 to 45c, 32 to 110f
Humidity 90 % non-condensing
Low power consumption 110/220 Vac, 50/60 Hz, 6W

Note * These specifications are subject to change without notice and may be altered to meet individual requirements