C 3 - 4 Channelized Agile Audio/Video Modulators MAVM-750 Series

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COMPONENTS:

SINGLE OUTPUT

MAINFRAME

MAVM-751-MF Stock No. 7982 (3)

INDIVIDUAL MODULATOR

MAVM-753-1 Stock No. 7993 ( 2 , 3 ) ( VHF, CATV ) (54-300MHz) $467 (300-756MHz)

Stock No. U7993( 2 , 3 ) ( UHF )

Stock No. S7993 ( 2 , 3 ) ( SUB )

INDIVIDUAL MODULATOR

MAVM-60-753-1

Stock No. 7978( 2 , 3 )( VHF, CATV ) (54-300MHz) (300-756MHz)

Stock No. U7978( 2 , 3 )( UHF )

Stock No. S7978( 2 , 3 )( SUB )

MODULATOR BASE MAVM-753-MB Stock No. 7983 (3)

POWER SUPPLY MAVM-753-PS Stock No. 7972

FRONT PANEL MAVM-753-FP Stock No. 7963

OUTPUT FILTER MODULE OFM-40-750 Stock No. 7984 ( 2 ) ( VHF, CATV )

Stock No.U7984 ( 2 ) ( U H F )

Stock No.S7984( 2 ) ( S U B )

OFM-60-750 Stock No. 7985( 2 ) ( V H F, C AT V )

Stock No.U7985( 2 )( U H F )

Stock No.S7985( 2 )( S U B )

OPTIONS:

AURAL LOCK OPTION MAVM-750-AL Stock No. 7945

±500 Hz A u d i o

Intercarrier Stability

S P E C I F I C AT I O N S  M AVM-750 Series

R F  7 9 9 x U n i t s

Frequency Range: 5 4 - 7 5 8 M H z

C h a n n e l s : V H F, CAT V, UHF

Output Level - Min

54-648 MHz: + 4 2 d B m V

648-758 MHz: + 4 0 d B m V

Output Level A d j u s t : 15 (a) d B

A u r a l / Visual Carrier Ratio: -9 to -20 d B

Visual Carrier Frequency To l e r a n c e

Standard Channels: ± 5 k H z

FCC Aeronautical Channels: ± 5 k H z

Aural Carrier Frequency

Offset from Visual Carrier: 4 . 5 M H z

A c c u r a c y, Settable To (STD.): ± 1 . 5 k H z

Channel Selectivity:

Adjacent Aural and Below: - 4 0 d B

Adjacent Picture and A b o v e : - 4 0 d B

Spurious Outputs OFM-40: - 6 6 d B c

Spurious Outputs OFM-60: - 6 0 d B c

C/N Ratio In Channel: 6 5( b ) d B

Broadband Noise (40/60): - 9 5 / - 110 (b) d B c

Output Impedance: 7 5 OHM

Output Return Loss: 1 5 d B

I F

Aural Frequency: 4 1 . 2 5 M H z

Visual Frequency: 4 5 . 7 5 M H z

Composite IF Loop Output

Aural Carrier Level (d): + 1 5 d B m V

Visual Carrier Level (d): + 3 0 d B m V

Output/Input Impedance: 7 5 W

Output Return Loss: 1 2 d B

Input Return Loss: 1 0 d B

V I D E O

Input Level: 1.0 (e) V p-p

Frequency Response

fv-0.5 MHz to fv+4.2 MHz: ± 1 . 0 d B

P - P Video to RMS Hum Ratio: 6 0 d B

Video Signal-to-Noise Ratio, We i g h t e d : 62 (b) d B

Differential Gain: ±2.0 (e) %

Differential Phase: ±1.0 (e) °

C / L Delay Inequality: see note (c) n s

Over Modulation Indicator: 87.5, ±2.5 %

Input Impedance: 7 5 W

Input Return Loss: 1 8 d B

A U D I O

Input Level: 140 (f) mV RMS

Frequency Range: 20 Hz to 20 kHz

Frequency Response: ±1.0 (g) d B

P r e - E m p h a s i s - M o n o : 7 5 µ s

Audio Signal-to-Noise: 6 0 d B

Total Harmonic Distortion: 0.5 (h) %

Over Modulation Indicator: 25, ±2 k H z

Input Impedance: 10 k, unbalanced W

SUB-CARRIER AUDIO

F r e q u e n c y : 4 . 5 M H z

S t a b i l i t y

S t a n d a r d : ±5 (i) k H z

Aural Lock Option: ±500 (i) H z

G E N E R A L M AVM-750 Series U n i t s

Power Requirements

Vo l t a g e : 117, ±10% VA C

F r e q u e n c y : 6 0 H z

P o w e r

M AV M - 4 0 - 7 5 1 : 6 . 5 W

M AV M - 6 0 - 7 5 1 : 9 . 0 W

M AV M - 4 0 - 7 5 3 : 1 6 . 5 W

M AV M - 6 0 - 7 5 3 : 2 2 . 5 W

F u s e : 1/8 or 1/4 (j) A

Temperature Range: 0 to +50 ° C

M E C H A N I C A L

Dimensions (WxHxD)

M AV M - 7 5 1 : 19.0 x 1.75 x 5.5 i n .

(483 x 44 x 140) m m

M AV M - 7 5 3 - 3 : 19.0 x 1.75 x 16.25 i n . (483 x 44 x 413)

We i g h t

M AV M - 7 5 1 : 6.0 lbs. (2.73 kg)

M AV M - 7 5 3 - 3 : 10.8 lbs. (4.91 kg)

CONNECTORS (Rear Panel)

Video Input: "F" type, female

Audio Input: R C A Phono, female

IF Output (d): "F" type, female

IF Input (d): "F" type, female

RF Output: "F" type, female

CONTROLS (Front Panel)

Channel Selection (k): D I P Switches (l)

Video Level: C o n t r o l

Aural Carrier Level: C o n t r o l

Audio Level: C o n t r o l

RF Output Level: C o n t r o l

I N D I C ATORS (Front Panel)

Power ON: LED, green

Video Over Modulation: LED, red

Audio Over Modulation: LED, red

N O T E S

(a) continuously adjustable

(b) 4 MHz bandwidth

(c) meets FCC CATV group delay pre-distortion requirements for color transmission

(d) IF loops are optional on MAVM-753-40

(e) 87.5% depth of modulation

(f) for 25 kHz peak deviation

(g) referenced to standard 75 µs pre-emphasis

(h) 20 Hz to 20 kHz, 25 kHz deviation

(i) 0 °C to +50 °C

(k) MAVM-751 Series: DIP switches accessible from front panel MAVM-753 Series: DIPswitches internally accessible

(l) in order to change channels, the DIPswitches must be reset to the same channel as the new output filter module (OFM-40-750) that is installed in the unit, simply changing the DIP switch settings alone will not change the channel

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