15
HE-12/HE-4
Instruction Manual
AMM-806 — Agile Micro Modulator
Description
The AMM-806 is an economical CATV agile audio/video modulator. It joins Blonder Tongue's family of modular headend
components and works in conjunction with the MIRC-12V rack chassis and MIPS-12C power supply. It covers channel
frequencies between 54-806 MHz. Channel selection is done by easy to use front panel DIP switches. FCC frequency offsets
per Docket 21006 are automatic via the units internal pre-programmed micro processor.
The AMM-806 accepts standard audio/video sources such as satellite receivers, television camera, video tape recorders or
demodulators. The advanced design ensures access for all level and over-modulation controls via the front panel. The audio
pre-emphasis can be disabled internally for use with a BTSC Stereo Encoder.
Setting up the AMM-806 Output Channel
Channel setting is accomplished by setting the channel switch
to the desired output channel.
The switch is divided into 2 sections, the Tens section (denoted
as "X") and the Ones section (denoted as "Y").
In each section, there are 4 switches labeled - 8,4,2,1. This
corresponds to the switch value.
Setting the switch to the right invokes the corresponding value
of the switch.
The user sets the Tens section and the Ones section to reflect
the desired channel. (i.e., For CH 116, you set 11 Tens and 6
ones for 116. For single digit channels, the Tens switch is set
to zero.)
RF
CATV Frequency Range:
AMM-806 (CH 2-125)
Output Level - Min: 35-45 dbmV, Continuously Variable
Aural/Visual Carrier Ratio: -12 to -18 db
Visual Carrier Frequency Tolerance
Standard Channels: ±10 kHz
FCC Aeronautical Channels (AMML Only): ±5 kHz
4.5 MHz Aural Inter Carrier Frequency: ±150 Hz (max)
Spurious Outputs: -60 dbc
C/N Ratio In Channel: 60 db
broadband Noise: -75 dbc
Output Impedance: 75 ohm
Output Return Loss: 10 db
Video
Input Level: 1.0 V p-p
Frequency Response: fv-0.5 MHz to fv+4.2 MHz: ±1.0 db
Input Impedance: 75 ohm
Input Return Loss: 18 db min
Differential Phase: 2.0°
Differential Gain: 1.0%
Group Delay Response:
Meets FCC CATV Predistortion Requirements
for Color Operation
Audio
Input Level: 0.4 to 4.0 V p-p
Frequency Range: 30 Hz to 15 kHz, ± 0.5 db
(Exceeds 100 kHz with Pre-emphasis Defeated)
Input Impedance: 10k ohm, Unbalanced
Distortion: 30 Hz to 15 kHz 0.6%
Examples of switch settings
for various channels
X = 8
Y = 4
8
4
2
1
8
4
2
1
X = 11
Y = 6
8
4
2
1
8
4
2
1
AMM - 806
XY = ch.116
XY = ch. 84
General
Power Requirements
Voltage: +12 VDC @ 155mA
Power: +5 VDC @ 265mA
Temperature: 0° to 50° C
Mechanical
Dimensions (W x H x D):
1.15 x 3.5 x 7.5 in., 29 x 89 x 191 mm
Weight: 0.8 lbs, 0.36 kg
Connectors (Rear Panel)
Video Input: “F” Type, Female
Audio Input: RCA Phono
RF Output: “F” Type Female
Power: 3 Pin Header
Controls (Front Panel)
Channel Selection: Dip Switches
Video Level: Control
A/V Ratio: Control
Audio Level: Control
RF Output Level: Control
Indicator (Front Panel)
Power ON: LED
