Panasonic Aj Hdc20a Operating Instructions Manual

							111
Inspections prior to shooting
Inspecting the aperture and
zoom functionsInspecting the VTR unit
1Set the zoom to the motorized zoom mode, and
check its operations in this mode.
Check that the image changes when the zoom is
set to the telephoto and wide-angle positions.
1. Tape travel inspection
1Set the VTR SAVE/STBY switch to SAVE, and
check that the VTR SAVE lamp inside the
viewfinder lights.
2Set the VTR SAVE/STBY switch to STBY, and
check that the VTR SAVE lamp goes off.
3Set the TCG switch to R-RUN.
4Set the DISPLAY switch to CLT.
5Press the unit’s VTR START button, and check
that:
OThe tape reels rotate.
OThe figure shown on the counter display
changes.
OThe REC lamp inside the viewfinder lights.
OThe RF and SERVO displays do not appear in
the display window.
6Press the unit’s VTR START button again.  Check
that the tape stops and the REC lamp inside the
viewfinder goes off.
7Use the lens VTR button to check the same
operations as in steps 
5and 6.
8Press the RESET button, and check that
“00:00:00:00” appears on the counter display.
9Set the LIGHT switch to ON, and check that the
display window illuminates.
10Press the REW button, and after the tape has
been rewound for a few seconds, press the
PLAY/PAUSE button.
Check that the tape is recorded, played back
and rewound properly.
11Press the FF button, and check that the tape is
fast forwarded properly.
2Set the zoom to the manual zoom mode, and
check its operations in this mode.
Turn the manual zoom lever, and check that the
image changes when the zoom is set to the
telephoto and wide-angle positions.
3Set the aperture to the auto adjustment mode,
point the lens at some objects with different
brightness levels, and check that the auto aperture
adjustment works.
4Set the aperture to the manual adjustment mode,
turn the aperture ring, and check that the manual
aperture is adjusted.
5While holding down the auto instantaneous
aperture adjustment button, point the lens at some
objects with different brightness levels, and check
that the auto instantaneous aperture adjustment
function works.
6Return the aperture to the auto adjustment mode,
switch the GAIN switch setting to L, M and H, and
check that:
OThe aperture is adjusted for objects of the same
brightness level in tandem with the switching of
the gain setting.
OThe gain displayed on the viewfinder screen is
switched in tandem with the switching of the
gain setting.
7When a lens with an extender has been installed,
set the extender to the operating position, and
check that it works properly.Perform all the steps outlined in section “1. Tape
travel inspection” through section “4. Earphone and
speaker inspection” one after the other. 
						

							112
6. Inspections relating to the time code
and user’s bit
1Set the user’s bit as required.
For details on the setting procedure, refer to
“Setting the user’s bit” (page 55).
2Set the time code.
For details on the setting procedure, refer to
“Setting the time code” (page 56).
3Set the TCG switch to R-RUN.
4Press the VTR START button.
Check that the figure on the counter display
changes as the tape travels.
5Press the VTR START button again.
Check that the tape stops and the figure shown on
the counter display stops changing.
6Set the TCG switch to F-RUN.
Check that the figure on the counter display
changes irrespective of the tape travel.
7Set the DISPLAY switch to UB.
Check that the user’s bit which has been set is now
displayed.
5. Inspection using external microphones
1Connect external microphones to the AUDIO IN
CH1 and CH2 jacks.
2Set the AUDIO IN CH1 and CH2 switches to
REAR.
3Set the LINE/MIC/+48V selector switch on the
back panel to MIC or +48V in accordance with the
external mic’s power supply type.
MIC :Internal power supply mic.
+48V :External power supply mic.
4Point the microphones at the sound source, and
check that the changes in the audio levels
displayed on the audio level meter of the display
window and in the viewfinder reflect the changes in
the strength of the sound.
This inspection can also be performed for each
channel by connecting one of the microphones to
each channel in turn.
Inspections prior to shooting
Inspecting the VTR unit
2. Automatic audio level adjustment
function inspection
1Set the AUDIO SELECT CH1 and CH2 switch to
AUTO.
2Set the AUDIO IN CH1 and CH2 switches to
FRONT.
3Point the microphone connected to the MIC IN jack
at a suitable sound source, and check that the
changes in the level displays for both CH1 and
CH2 reflect the changes in the strength of the
sound.
3. Manual audio level adjustment function
inspection
1Set the AUDIO IN CH1 and CH2 switches to
FRONT.
2Set the AUDIO SELECT CH1 and CH2 switch to
MAN.
3Turn the AUDIO LEVEL CH1 and CH2 controls.
Check that when they are turned clockwise, the
level displays increase.
4. Earphone and speaker inspection
1Set the VTR SAVE/STBY switch to STBY.
2Turn the MONITOR control, and check that the
speaker volume changes.
3Connect the earphones to the PHONES jack.
Check that the sound from the speaker is muted,
and that the microphone’s sound is heard in the
earphones.
4Turn the MONITOR control, and check that the
earphone volume changes. 
						

							113
Specifications
[GENERAL]
Supply voltage:
DC 12 V (DC 11 V—DC 17 V)
Power consumption:
38 W (maximum)
32 W (during SAVE REC mode)
Ambient operating temperature:
+32°F to +104°F (0°C to +40°C)
Storage temperature:
–4°F to +140°F (–20°C to +60°C)
Ambient operating humidity:
Less than 85% (relative humidity)
Continuous operating time:
Approx. 70 minutes
(when using the 14/40W Anton/Bauer Trim pack)
Weight:
9.46 lb (4.3 kg) (main unit only)
Approx. 15.4 lb (7 kg) 
(including main unit, viewfinder, lens, battery pack,
tape and microphone)
Dimensions (Wa
Ha
D) (excluding grip):
5 
1/4˝a
8 1/16˝a
12 3/8˝ (132a
204a
313 mm)Pickup device:
2/3˝ on-chip FIT-type CCD (2.2 million pixels)
System:
RGB 3-CCD system
Total number of pixels:
2010 (H) a
1086 (V)
Number of effective pixels:
1920 (H) a
1080 (V)
Optical system:
F/1.4 prism system
Built-in filters:
CC filter:
A: CROSS, B: 3200 K, C: 4300 K, D: 6300 K
ND filter:
1: CLEAR, 2: 1/4 ND, 3: 1/16 ND, 4: 1/64 ND
Quantizing:
10-bit non-linear
Sampling frequency:
74 MHz
Digital signal processing:
74 MHz
Horizontal drive frequency:
74 MHz
Programmable gain:
Choice of 3 positions (L/M/H) from –3 dB/0 dB/3 dB
/6 dB/9 dB/12 dB/15 dB/18 dB/21 dB/24 dB/27 dB
/30 dB
Super gain:
18 dB/21 dB/24 dB/27 dB/30 dB selectable
Shutter speed:
Preset:
1/100, 1/120, 1/250, 1/500, 1/1000, 1/2000 sec.
Synchro scan:
1/30.3 to 1/58.8 sec, 1/60.8 to 1/250.2 sec.
Lens mount:
2/3˝ Bayonet type
Sensitivity:
F/8 (2000 lux, 89.9% reflection)
Minimum subject brightness:
2 lux (with F/1.4, +30 dB)
Video S/N ratio:
54 dB (typ.)
Horizontal resolution:
More than 1000 TV lines (center)
Registration:
Less than 0.03% (entire range) (excluding lens)
[CAMERA UNIT] 
						

							114
Specifications
[VTR UNIT] [Connector Section]
VTR Video System
Sampling frequency:
Y : 74 MHz
P
B/PR: 37 MHz
Quantizing:
8 bits
Video compression system:
DCT + variable-length code
Video compression ratio:
1/6.7
Error correction:
Reed-Solomon product code
Video recording bit rate:
100 Mbps
Video band:
Y : 20 MHz
P
B/PR: 10 MHz
VTR Audio System
(during playback on standard player)
Sampling frequency:
48 kHz (synchronized with video)
Quantizing:
16 bits
Frequency response:
20 Hz to 20 kHz ±1.0 dB (at reference level)
Dynamic range:
More than 85 dB (at 1 kHz, AWTD)
Distortion:
Less than 0.1% (at 1 kHz, reference level)
Wow and flutter:
Below measurable limits 
Head room:
20 dB
VTR Tape Transport System
Tape used:
1/4˝ DVCPRO L-size cassette tape
Tape speed:
135.28 mm/sec.
Recording/playback time:
46 minutes (using AJ-HP46LP)
32 minutes (using AJ-HP32LP)
FF/REW time:
Approx. 3 minutes (using AJ-HP46LP)
Input
AUDIO IN CH1/CH2 (XLRa
2, 3-pin female)
LINE/MIC/MIC+48V switching type
LINE : +4 dBu
MIC : –60 dBu
MIC+48V : Phantom +48V, –60 dBu
MIC IN (XLR, 3-pin female)
–40 dBu (switchable to –50 dBu using internal switch)
Phantom +48 V supported
GENLOCK IN (BNC):
Compliant with SMPTE274M (analog sync)
standard
TC IN (BNC):
0.5 V—8 V [p-p], high impedance
Output
HD SDI OUT (BNCa
2):
0.8 V [p-p], with switch function
AUDIO OUT (XLR, 5-pin male):
+4 dBm
TC OUT (BNC):
2.0 V [p-p], low impedance
PHONES:
Stereo mini jack
Other
DC IN (XLR, 4-pin male):
DC 12 V (DC 11 V—17 V)
DC OUT (4-pin): 
DC 12 V (DC 11 V—17 V), 0.1 A (max.)
LENS (12-pin)
ECU (6-pin)
EVF (20-pin) 
						

							115
Specifications
[VIEWFINDER]
(Optional accessory: AJ-HVF20)
CRT:
2˝ high-resolution monochrome tube
Video system:
1080i/59.94 Hz
External adjustment controls:
Controls:
BRIGHT, CONTRAST, PEAKING
Switches:
TALLY HIGH/OFF/LOW, ZEBRA ON/OFF
[ACCESSORIES]
OShoulder strap (a
1)
OBattery terminals (including screws) for supporting
Sony battery packs
OBattery holder (already installed on main unit) for
Anton/Bauer battery packs
[RELATED COMPONENTS & PARTS]
Relating to power supply
Battery pack:
AU-BP402, AJ-BP490
Battery charger:
AG-B425 (for charging AU-BP402 battery pack)
AJ-B450 (for charging AJ-BP490 battery pack)
Battery case:
AU-M402H
AC adapter:
AJ-B75
Viewfinder
2.0˝ viewfinder:
AJ-HVF20
Relating to external VTRs
Extension control unit:
AJ-EC3
Audio components
Microphone kit:
AJ-MC700P
Mic holder:
AJ-MH700P
Wireless mic receiver:
WX-RJ700
Camera attachment:
WX-ZJ770
Maintenance products
Cleaning tape:
AJ-CL12LP
Soft carrying case:
AJ-SC900
Rain cover:
SHAN-RC700 
						

							PANASONIC BROADCAST & DIGITAL SYSTEMS COMPANY
DIVISION OF MATSUSHITA ELECTRIC CORPORATION OF AMERICA
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F0700W @ Printed in Japan
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