Blonder tongue MISE User Manual

MISE - STEREO ENCODER

1. FRONT PANEL CONTROLS and INDICATORS

AUDIO

LEVEL

F1

F2

PILOT
LOCK

F3

POWER

F4

OVER­MOD

F5

F1：AUDIO LEVEL Control

The setting of this screwdriver adjustment determines the audio input signal level. After system
audio modulation levels are properly set, and with left and right audio signals within the 250
mVrms to 2.5 V rms range, set this control to a point where the OVERMODULATION
indicator just remains off (see item F5).

F2：

TEST TONE Switch

Switch to the ‘ON’ position to enable an internal test tone to aid system audio level setup. See
the ‘Installation’ section of this manual for setup information. The normal position of this
switch is the ‘OFF’ position.

F3：

PILOT LOCK Indicator

Lights to indicate that a video signal is applied to the rear panel VIDEO INPUT connector and
that the STEREO ENCODER is locked to the video horizontal sync.

F4：

POWER Indicator

Lights when the unit is connected to the required source of DC power.

F5：

OVERMODULATION Indicator

Lights to indicate greater than 25 KHz of main channel deviation. After system audio
modulation levels are properly set, and with left and right audio source input, adjust the AUDIO
LEVEL control (see item F1) to a point where the OVERMODULATION indicator just remains
off.

2. REAR PANEL CONNECTIONS / INTERNAL JUMPERS

R1

R2

R3

R4

R1：VIDEO INPUT Connector

This is the baseband video input to the STEREO ENCODER which provides the encoder
circuitry with the modulator horizontal sync information.
The baseband video to the modulator must be ‘looped through’ this input using an external ‘F’
type Tee (T) connector.

R2：

COMPOSITE AUDIO OUT Connector

This is the unbalanced composite BTSC format stereo signal output. The output from this RCA
phono receptacle must be connected to the AUDIO INPUT of the modulator.
The connected modulator audio response must be set for ‘Flat’ (pre-emphasis defeated).

R3：

DC INPUT Connector

This 3-pin connector (Male) accepts the appropriate mating DC power cable. Observe proper
orientation and wiring.

R4：STEREO AUDIO INPUT Connector

This is the left and right audio source input connector that accept the stereo L/R
plug, 3.5mm

4. INSTALLATION – AUDIO LEVEL SETTING, continued

4. Set the STEREO ENCODER TEST TONE switch to the ‘OFF’ position. Connect Left and

Right audio source signals to the STEREO ENCODER.

5. Set the ‘Audio LEVEL’ control on the STEREO ENCODER to a point where the

‘OVERMODULATION’ indicator just remains off or flashes occasionally.
The system audio levels are now properly set.
Disconnect the test equipment.

METHOD 2：(If a spectrum analyzer is not available)

1. Connect the STEREO ENCODER, A/V modulator, compatible DC power source, and

video source signal as shown on this page. Keep the ‘TEST TONE’ switch ‘OFF’ for this
procedure.

2. Connect a TV receiver (with MTS stereo capability) to the A/V modulator. Tune the TV

receiver to the same channel as the modulator output.

NOTE：Make certain that the audio response of the A/V modulator is set for ‘FLAT’

(pre-emphasis defeated).

3. Connect the audio source signal (not a tone) to either the LEFT or the RIGHT Audio Input

of the STEREO ENCODER.

4. Set the ‘Audio LEVEL’ control on the STEREO ENCODER to a point where the

‘OVERMODULATION’ indicator just remains off or flashes occasionally.

5. While monitoring the opposite audio channel from the TV receiver audio output, set the

‘Audio’ level control on the A/V modulator for a maximum (stereo) separation condition.

3. INSTALLATION – AUDIO LEVEL SETTINGS

METHOD 1：

Connect the STEREO ENCODER, Audio/Video Modulator, compatible DC power source,
video source signal and test equipment as shown.
Make certain that the audio response of the A/V modulator is set for ‘FLAT’ (pre-emphasis
defeated).

VIDEO SOURCE

SPECTRUM ANALYZER

VIDEO INPUT
Loop-Through

COMPOSITE

AUDIO OUT

POWER IN

AUDIO INPUT

AUDIO Cable

DC IN

STEREO ENCODER

REAR PANEL

A/V

MODULATOR

1. Set the ‘Test Tone’ switch on the front panel of the STEREO ENCODER to the ‘ON’

position.

PILOT
LOCK

POWER

2. Using the connected spectrum analyzer, tune the aural carrier to the center of the screen.

Spectrum Analyzer Settings.
SPAN：100 KHz
Res BW：1 KHz
SWEEP：300 mSec.
VBW：1 KHz

3. Adjust the ‘Audio’ control on the front panel of the connected A/V modulator for a setting

that nulls the aural carrier. If more than one null is found, use the lowest audio gain setting
that produces a null of the aural carrier.

4. INSTALLATION – AUDIO LEVEL SETTING, continued

4. Set the STEREO ENCODER TEST TONE switch to the ‘OFF’ position. Connect Left and

Right audio source signals to the STEREO ENCODER.

5. Set the ‘Audio LEVEL’ control on the STEREO ENCODER to a point where the

‘OVERMODULATION’ indicator just remains off or flashes occasionally.
The system audio levels are now properly set.
Disconnect the test equipment.

METHOD 2：

(If a spectrum analyzer is not available)

1. Connect the STEREO ENCODER, A/V modulator, compatible DC power source, and

video source signal as shown on this page. Keep the ‘TEST TONE’ switch ‘OFF’ for this
procedure.

2. Connect a TV receiver (with MTS stereo capability) to the A/V modulator. Tune the TV

receiver to the same channel as the modulator output.

NOTE：Make certain that the audio response of the A/V modulator is set for ‘FLAT’

(pre-emphasis defeated).

3. Connect the audio source signal (not a tone) to either the LEFT or the RIGHT Audio Input

of the STEREO ENCODER.

4. Set the ‘Audio LEVEL’ control on the STEREO ENCODER to a point where the

‘OVERMODULATION’ indicator just remains off or flashes occasionally.

5. While monitoring the opposite audio channel from the TV receiver audio output, set the

‘Audio’ level control on the A/V modulator for a maximum (stereo) separation condition.

VIDEO SOURCE

AUDIO

LEVEL

PILOT
LOCK

POWER

OVER­MOD

VIDEO IN
Loop-Through

COMPOSITE

AUDIO OUT

RIGHT/LEFT

AUDIO SOURCE

AUDIO CABLE

STEREO ENCODER

REAR PANEL

DC INPUT

MODULATOR

A/V

VIDEO IN

AUDIO IN

DC INPUT

TO system Distribution
or TV Receiver

2. REAR PANEL CONNECTIONS / INTERNAL JUMPERS

p

p

p

p

p

p

p

q

p

q

m

p

p

p

R1：VIDEO INPUT Connector

This is the baseband video input to the STEREO ENCODER which provides the encoder
circuitry with the modulator horizontal sync information.
The baseband video to the modulator must be ‘looped through’ this input using an external ‘F’
type Tee (T) connector.

R2：COMPOSITE AUDIO OUT Connector

This is the unbalanced composite BTSC format stereo signal output. The output from this RCA
phono receptacle must be connected to the AUDIO INPUT of the modulator.
The connected modulator audio response must be set for ‘Flat’ (pre-emphasis defeated).

R3：DC INPUT Connector

This 3-pin connector (Male) accepts the appropriate mating DC power cable. Observe proper
orientation and wiring.

R4：STEREO AUDIO INPUT Connector

This is the left and right audio source input connector that accept the stereo L/R
plug, 3.5mm

5. SPECIFICATIONS

AUDIO INPUT

In

ut Impedance：

ut Level：

In

20K Ohms unbalanced.

250 mVrms ~ 2.5 Vrms, Adjustable

VIDEO INPUT

ut Impedance：

In

In

ut Level Range：

COMPOSITE OUTPUT

ut Impedance：

Out

Out

ut Level：

STEREO PERFORMANCE

Stereo Se

aration：

Total Harmonic Distortion：

S/N Ratio：

Fre

uency Response：

urious Subcarrier：

S

TEST TONE

uency：

Fre

A

litude：

10 Kohm min.

0.5 Vp-p to 2 Vp-p

100 Ohms

1.1 Vp-p @100% modulation

20 dB.

0.25% Max.

65 dB. Min.

± 1 dB @50 Hz to 12 KHz.

-50 dBc typ.

10.396 KHz ±50 Hz.

0.5 Vp-p ± 10%

GENERAL

DC Power In

O

erating Temperature Range： 0℃ to + 50℃ ambient.

ut：

Size：

Weight：

+12V ±5% @ 200 mA

2.6 (L) × 8.0 (H) × 23.4 (W) cm

0.33 kg

[phone] • [phone] • FAX: [phone]

One Jake Brown Road

Old Bridge, NJ 08857-1000 USA

www.blondertongue.com