13
HE-12/HE-4
Instruction Manual
Pre-emphasis Jumper
MONO
Position 1-2 = Stereo
Postion 2-3 = Mono
Position 1-2 = Disable
Postion 2-3 = Enable
1
2
3
ENABLE
DISABLE
STEREO
1
2
3
MICM-45C comes factory set for audio pre-emphasis enabled.
Internal jumper Settings
1
5
3
4
2
DC Input
+5 V
+12 V
GND
Operating Controls and Indicators - MICM-45
Front Panel
All operating controls are located on, or are ac ces si ble from the front panel.
1.
Audio
- Adjusts the aural carrier modulation.
1A Audio - Aural carrier modulation control/overmodulation indicator.
2.
Stereo Indicator
3.
Video
- Adjusts the modulation percentage.
3A Video - Modulation control/overmodulation indicator.
4.
Power
- The green LED indicates power is present and the fuse is good.
5.
A/V
- Controls the amplitude of aural RF carrier to change aural/visual ratio.
6.
Channel
- The modulator is factory aligned to the channel number indicated.
7.
RF
- The RF pot simultaneously adjusts the am pli tude of aural and visual
carriers to the final drive amplifier.
Rear Panel
All the connectors on the Modulator are located on the rear panel.
1.
Video Input
- The modulator accepts standard neg a tive sync video at a 0.7 to 2.5 Vp-p level.
2.
Audio Input
- The modulator accepts 140 mV RMS for 25 kHz peak deviation (MICM-C).
Left audio input for MICM-S only.
3.
Power
- The polarized power connector a12 VDC +5 VDC and ground.
4.
Right Audio Input
for MICM-S only. Connector not used in MICM-C (capped)
5.
RF Out
- The filtered RF signal is available for connection to a headend combiner.
MICM-c
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
MICM-s
AUDIO
VIDEO
POWER
A/V
RF
CH
BLONDER
TONGUE
65
1
1A
3A
3
4
5
7
6
2
