JVC Hm 100 U Manual

7
INTRODUCTION
Routine and Periodical Mainte-
nance
The GY-HD100 incorporates precision mechanical parts,
which will collect dirt, wear out and deteriorate as the unit is
used. After the unit has been used for a long period even in a
normal environment, the heads, drums and tape transport
mechanisms also collect dirt. Especially, dust which pene-
trates the inside of the VTR section during outdoor use will
promote the wear and deterioration of mechanical parts by
causing poor contact between tape and...

8
INTRODUCTION
Battery Pack to be Used
The GY-HD100 can use any of the following batteries.
• BN-V428, BN-V438
Videocassette to be Used
• Use JVC’s videocassette tapes marked with the A sym-
bol.
• Mini DV videocassette : M-DV63HD
M-DV63PROHD
* Do not use M-DV80.
• Videocassettes cannot be used upside down.
• Avoid storing a videocassette with its tape not being com-
pletely wound, as this may damage the tape. Rewind it to
the beginning before placing a cassette into storage.
• Store videocassettes in a...

9
INTRODUCTION
Condensation
• If the unit has been cooled down in a cold place and is then
carried to a warm place, the moisture contained in the
warm air may adhere to the head drum or tape guides and
be cooled into water droplets. This phenomenon is referred
to as condensation (dewing). When this occurs, the head
drum and tape guides are covered with droplets allowing
the tape to be stuck to them, leading to tape damage.
• Condensation occurs in the following cases:
• When the unit is suddenly moved...

10
CONTROLS, INDICATORS AND CONNECTORS
ZOOM Lens
Th16 x 5.5BRMU
1FOCUS ring
Manual focus ring.
2ZOOM lever/ring
This is the manual zoom ring equipped with a zoom lever.
To adjust the zoom manually, turn the zoom mode knob b
to position “M”.
3IRIS ring
Manual iris ring. To activate the auto iris feature, set the Iris
Mode switch 7 to “A”.
4[VTR] VTR trigger button
To start/stop shooting.
5[RET] Return video button
You can only monitor the return video signal from the VTR
from the viewfinder, LCD monitor...

11
CONTROLS, INDICATORS AND CONNECTORS
Front Section
1Shoe
Makes it possible to mount separately sold lights and
accessories.
2Knob
This is the mounting knob for the microphone holder 3.
3Microphone holder
Makes it possible to attach the provided microphone or a
separately sold microphone.
XSee “Attaching the Microphone (Provided)” on page 29.
4Front tally lamp
This lamp lights up when the GY-HD100 enters the record
mode. It blinks during the transition to the record mode.
When the tape has run out, or...

12
CONTROLS, INDICATORS AND CONNECTORS
Rear Section
1Back tally lamp
This lamp lights up when the GY-HD100 enters the record
mode. It blinks during the transition to the record mode.
When the tape has run out, or the VTR enters the warning
mode, it blinks quickly.
• Use the BACK TALLY item on the OTHERS [1/2] menu
screen to select whether or not the lamp should light and
the lighting pattern.
XSee page 77.
2[PHONES] Earphone jack
This is a stereo mini-jack for connecting an earphone for
audio monitoring....

13
CONTROLS, INDICATORS AND CONNECTORS
LCD Door
1[LCD BRIGHT +/–] LCD brightness +/– button
This button is for adjusting the brightness of the LCD moni-
tor display.
• Pushing the button in the + direction makes the monitor
brighter.
• Pushing the button in the – direction makes the monitor
darker.
• Pushing the +/– buttons simultaneously returns the set-
ting to the standard setting.
2[CH-1/CH-2 AUDIO SELECT] CH-1/CH-2 audio selector
switch
Selects the method of adjusting the CH-1 and CH-2 audio
channel...

14
CONTROLS, INDICATORS AND CONNECTORS
Right Side Section
1Monitoring speaker (Cheek pad)
• In the Camera mode, the input sound can be EE moni-
tored.
In the VTR mode, the speaker outputs the VTR playback
sound.
The sound to be output is selected with the MONITOR
SELECT switch e on page 18.
• The sound level is adjusted with the MONITOR sound
level volume 3. This speaker also outputs various
warning sounds superimposed on other sound.
XSee “Alarm Sound” on page 87.
2Cheek pad set screw
Screw for...

15
CONTROLS, INDICATORS AND CONNECTORS
b[GAIN] Sensitivity selector switch
Electronically boosts the light sensitivity when there is
insufficient illumination on the subject.
The boosting level differs depending on the switch position
as follows:
(Factory presets)
L : 0 dB (no boosting is applied)
M : 9 dB (boosted to approximately 3 times the original)
H : 18 dB (boosted to approximately 8 times the original)
• The boosting level for each switch position can be
changed with the SWITCH MODE menu screen....

16
CONTROLS, INDICATORS AND CONNECTORS
Left Side Section
1[DC INPUT] DC connector
Power input for 7.2 V DC accepts the supplied AC adapter.
XSee “AC Operation” on page 31.
2[LINE OUTPUT] Line output connector (Φ3.5mm)
Output connector for audio signals.
• Outputs the input audio signal in the Camera mode.
• Outputs the playback audio signal in the VTR mode.
• When a HDV/DV signal (IEEE1394) is input, the EE
sound of the input audio signal is output in the VTR
mode. (GY-HD100U/GY-HD101E only)
MEMO
Alarm...