Panasonic Lumix DMW-YAGH Interface Unit for GH4

Panasonic Lumix DMW-YAGH Interface Unit for GH4

Panasonic Lumix DMW-YAGH Interface Unit for GH4

No Longer Available

Product Highlights

  • For Professional Audio/Video Workflows
  • 2x Monaural XLR Inputs
  • Line/Mic Level Switch & Phantom Power
  • Audio Level Display Monitor
  • 2x 3G-SDI Capable BNC Connectors
  • 2x HD-SDI Capable BNC Connectors
  • Quad-Link SDI Output for 4:2:2/10-Bit 4K
  • HDMI Output
  • Timecode In
  • 12VDC 4-Pin XLR Power Input
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Panasonic YAGH Overview

  • 1Description

The Lumix DMW-YAGH Interface Unit for GH4 from Panasonic is designed to give the Lumix DMC-GH4 camera the video, audio, and power connectivity required for professional video workflows. When attached to the GH4, the Interface Unit has two monaural XLR inputs for line or condenser microphones, and gives you independent volume control of the left and right channels. There is also an audio level display monitor and +48V of phantom power for each channel. On the front of the unit you'll find a pair of front facing screw holes, which provide expandability for rod systems and added stability for PL mounts.

When it comes to video outputs, the Interface Unit provides four BNC connectors - two 3G-SDI capable and two HD-SDI capable. It outputs quad-link SDI 4K video in 4:2:2 10-bit, dual-link 4:2:2 10-bit 1080p up to 60 fps, or four simultaneous 1080p streams up to 30 fps - all with timecode. The Interface Unit also has a BNC connector for timecode input, and converts the GH4's micro HDMI output to a full-sized HDMI output. For power, a 4-pin XLR 12VDC input is available.

Note: The Interface Unit is not powered by the GH4 and requires an external 4-pin XLR 12VDC power source for use.

Note: When using 4:2:2/10-bit output, simultaneous video recording to an SDHC/SDXC memory card in the DMC-GH4 is not possible.

Table of Contents
  • 1Description

Panasonic YAGH Specs

Time Code In 1 x BNC, 1.0-4.0 Vp-p, 10 kΩ
Audio Input (CH 1/2) 2 x XLR 3-pin, high impedance, LINE / MIC / +48 V (switchable)

LINE: 0 dBu
MIC: -50 dBu
+48 V Phantom power compatible, -50 dBu
SDI Output 4 x BNC (2x 3G-SDI and 2x HD-SDI), 0.8 Vp-p, 75 kΩ

Embedded audio: 2 channel
Embedded time code
HDMI Output 1 x HDMI (type A)

Embedded audio: 2 channel (linear PCM)
Resolutions & Frame Rates 4096 x 2160: 24p
3840 x 2160: 23.98p, 24p, 25p, 29.97p
1920 x 1080: 50p, 59.94p (3G-SDI Level-A/B)
1920 x 1080: 23.98PsF, 24PsF, 25PsF, 29.97PsF, 50i, 59.94i
1280 x 720: 50p, 59.94p
Color Sampling 4:2:2
Bit Depth 8-bit / 10-bit
Sampling Frequency 48 kHz (synchronized with video)
Audio Quantization 16-bit
Headroom 12 dB
Power Source 1 x XLR 4-pin, 12 VDC, 1.5 A (including GH4)
Operating Temperature 32 to 104°F / 0 to 40°C
Operating Humidity 10 to 80% (no condensation)
Dimensions (WxHxD) 6.30 x 2.52 x 3.58" / 16.0 x 6.4 x 9.1 cm (excluding protrusions and HDMI terminal)
Weight Approx. 1.65 lb (0.75 kg)
Packaging Info
Package Weight 2.3 lb
Box Dimensions (LxWxH) 9.3 x 6.3 x 5.8"

Panasonic YAGH Reviews

Lumix DMW-YAGH Interface Unit for GH4 is rated 3.3 out of 5 by 9.
Rated 4 out of 5 by from It works, but it has some issues. This unit provides the GH4 with the ability to have some high-end professional inputs and outputs. I love that part. What I don't love is some of the concessions that you have to make with regards to frame rate and resolution to run the interface unit. Here is a breakdown of what does and does not work with my gear. Small HD DP7 live view mode 30 or 60 4K 24p HDMI yes HDSDI yes 4K 30p HDMI no! HDSDI no! FHD 24p HDMI yes HDSDI yes FHD 30p HDMI no! HDSDI no! Ikan MS21 21.5 SD/HD-SDI Studio Monitor live view mode 30 or 60 4K 24p HDMI yes HDSDI yes 4K 30p HDMI yes (at 60) HDSDI no! FHD 24p HDMI yes HDSDI yes FHD 30p HDMI yes HDSDI no! MP4 does not output timecode. There is significant audio delay which can make monitoring very odd. So that's what I've figured out. The outputs aren't completely consistent with what downconverts will and will not work.
Date published: 2015-11-25
Rated 4 out of 5 by from HDMI, SDI out and Pro Audio In In my opinion, this unit makes the GH4 into a professional video camera. However, it's certainly not perfect. I begged the Nikon guy at NAB 2013 to build something like this for the D800, but nothing yet. Panasonic is listening. I'm commenting here with this very quick preliminary review because as of June 4, 2014, you cannot download the YAGH manual from Panasonic's website for details you may need. 1. Cost It's more than the camera body, which is to say, really expensive. I can only hope the YAGH will fit future GH5 and GH6 camera bodies. Please, Panasonic: don't obsolete this thing. 2. Power There is no internal battery. It has to have external power, supplied via the industry-standard 4-pin XLR. This is good and bad. Stated power requirement on the bottom plate is 12VDC at 1.4 amps. The camera can still work with its internal battery, but the YAGH will not work without external power in. Power is applied to Pin 4, Ground to Pin 1. (Pins 2 and 3 are not used.) The manual says voltage can vary from 11VDC to 17VDC. This means any professional AC camera supply or brick battery like an Anton Bauer 14.4VDC will work. (I'm using a 12VDC battery pack built from ten NiMH D-cells and supplies 10,000 mAh. Should go all day.) You'll need a 4-pin extension power cord and drag the power supply with you. Hello battery belt? Sort of going backward. It would be great to have the ability to add lith-ion batteries somehow but perhaps it draws too much power for smaller cells. When plugged in, the external power powers both YAGH and the GH4 body. The camera's battery can remain installed, but it not used. Good thing: you'd have to unmount the camera from the YAGH to change its battery. Once the YAGH is attached to the camera, an Interface Unit menu appears on the Motion Picture tab. There are many options. One setting allows you to set low battery warnings at 11, 12.5, 13.5 and 15 volts. This is very professional. 3. Fan Yes, it has a fan. You can barely hear it (can't hear it six inches away), but hot air blows out the left side when it's plugged in. I assume there's a lot of electronics inside to supply all the outputs. Have not demonstrated the fan can be heard by the camera-body's built in stereo mics. 4. Inputs: a. the 4-pin XLR power plug b. two, 3-pin XLR audio inputs, switchable between Line (0dB), Mic (-50dB) and 48VDC phantom power. A stereo/mono switch sends the signal from the left mic to both left and right channels. You can select which mics to use: the built-in stereo camera mics or the XLR inputs. c. time code-in on one of the BNC connectors d. the micro-HDMI plug that transfers the HDMI camera output signal to a full-sized HDMI on the YAGH unit. This HDMI interface is implemented clumsily; I hope there is a better reason than engineering laziness. It's basically a short Micro-to-Full HDMI extension cord. The dovetailed arm that sticks up on the left side of the unit holds the micro-HDMI cord with a plug. You mount the camera to the unit, open the rubber door on the camera's left side so that it sticks straight out of the camera, then slide the YAGH's dovetailed micro-HDMI plug into the camera, then tighten the tiny thumbscrew. The rubber door disappears into the dovetail arm and is not removed or abused by being bent back too far. This sturdy plastic arm with its metal dovetail very definitely protects the extremely fragile Micro-HDMI socket on the camera body. (I personally would not directly connect a cable into the camera. One yank and your camera is broken. I thought the Mini-HDMI plugs on Canon 5D's and Nikon D800's were bad. This Micro-HDMI is even smaller and weaker. The YAGH solves the problem.) It would have been better if Panasonic had routed the signal through the bottom of the camera, but that would mean another 15 pins down there, and it's already crowded. OTOH, if they had built a second micro-HDMI socket on the bottom and had a corresponding HDMI plug sticking up from the YAGH, that would have worked too. e. One drawback of this HDMI interface method: if you screw the dovetail in, it takes up the whole left side of the camera and you cannot pivot the flip-out viewfinder down at all and upwards only about 5 degrees. The whole point of the pivoting viewfinder is the ability to frame low- or high-angle shots. If you don't need to remote the HDMI to the YAGH (say you're using the audio interface and DC in and not monitoring via the HDMI) you can let the dovetail hang there, flopping in the wind, and allow the viewfinder to rotate. 5. Outputs a. full-sized HDMI socket under a rubber door on the left side outputs 4:2:2 8bit or 4:2:2 10bit. You can't record both internally and externally if in 10bit. You access this setting while in Creative Video Mode. The 8bit is good for sending to an external monitor while recording to the card. b. 4, SDI BNC connectors under a rubber door on the right side, marked 1, 2, 3 and 4. They output different signals based on the resolution of the recorded signal. - any of the four BNCs can output a 1.5G HDSDI signal if resolution is set up to 1080-29.97p. - 3G-SDI is output on BNCs 1 and 2 if you record in 1080-59.94p or 1080-50p - 1.5G-SDI Square Division (whatever that is) is output on all four BNCs as a group if you want to output the Cinema C4K (4096x2160-24.00p) or Broadcast 4K (3840x2160-24.00p/23.98p/29.97p). Apparently you will need all four BNCs to get enough bandwidth to send the 4K signals to an external monitor or recorder. 6. Plug and socket covers Minor point, but of some concern. The camera is not waterproof but is touted as splash proof. To achieve this, rubber doors seal the camera all over. The bottom of the camera has two rubber seals that cover two sets of contacts -- one with five, one with 18 contacts. The YAGH unit has quite exposed corresponding spring-loaded pins sticking up. When you attach the camera to the YAGH, you obviously need to remove the four covers. There's no place to store them. You will want them if you split the units apart, especially the camera seals. 7. Audio Controls a. two sets of 8-segment Ch1/2 LEDs indicating level: 4 green, 3 yellow, 1 red. There are no numbers anywhere I can find. No idea where -20dB is if you're sending tone to the unit from a mixer. All the manual says is that if the red LED lights, you're at 0dB. b. two approx. 1/2 diameter knobs to adjust level, shielded by a clear cover so they won't get hit accidentally yet are easy enough to adjust during a take without shaking the camera or making noise c. LED brightness is adjustable to either Hi or Low via the Interface Unit menu item under the Motion Picture tab 8. Mechanical a. two locating pins register to the camera body and are held tightly via the 1/4-20 tripod socket. It really becomes a single unit b. Both 3/8-16 and 1/4-20 threaded tripod mounts on the bottom. There's also a hole for the tripod plates that have an anti-rotation pin. Having both 3/8-16 and 1/4-20 allows you to use two screws to mount the YAGH to your tripod plate so it cannot rotate. c. two 1/4-20 threaded holes are supplied on the lower front of the YAGH to allow mounting a set of matte box rods, once some third party supplier starts making the rod/rail adapter. The two holes are exactly 32mm apart and centered 85mm below the optical center of the lens, conforming to the 15mm Light Weight Support (LWS) standard. If you hang a Nikon 70-200mm f/2.8 on a Metabones Speed Booster, you will definitely need rod supports. The little GH4 simply cannot hold that kind of weight out front without really stressing the joint between the YAGH and GH4. d. It's still not too giant for hand holding, but it's getting there. It's really designed to be tripod mounted. e. Because the YAGH extends forward of the camera and slopes downward, if you use one, the Metabones Speed Booster tripod foot must be removed for the adapter to fit the camera while attached to the YAGH. Fortunately, Metabones allows this and supplies necessary Allen wrenches and caps. f. One strange quirk: I hooked my Sound Devices 302 mixer to the YAGH with its Return audio monitoring the camera's headphone out, just like I do with any other video camera (Nikon D800, Sony, Panasonic) and I heard a terrible hum/noise if I monitored from the SD302's headphone return. If I plugged the headphones directly into the camera's jack the audio was clean. It sounded like an AC adapter ground problem, except both the YAGH and the SD302 were being powered by batteries. Again, did not effect the recorded audio -- just the monitoring through the return to the mixer. Present workaround is to plug the phones into the camera. The audio itself is very clean and the 48V phantom powers my Audio Technica AT4073a great. May not even need a mixer. Summary: Overall, the YAGH is useful -- allows (well, requires) external power for long runtimes, protects the camera from HDMI socket damage, outputs all kinds of signals up to true 4K via SDI and HDMI, allows timecode input and allows professional audio inputs. However, if you don't need external power, SDI-out or HDMI-out, a simple audio interface like the JuicedLink RM222 Dual-XLR Preamplifier with Phantom Power or a BeachTek DXA-SLR MINI PRO HDSLR Audio Adapter might suffice to get pro audio in.
Date published: 2014-06-08
Rated 5 out of 5 by from Everything I dreamed for ....Almost First: Build is good and connections ports to the camera are unorthodox but solid. Plug and play . Levels are bright clear to use. HDMI, XLR and SDI are robust and well place. The one thing that has been trial and error is getting SDI signals to correlate with the camera settings. First Update GH4 to 2.4 Firmware and then the YAGH to 1.1 Firmware. With this you can output via the YAGH HDMI 4k 24/30, 1080p 23.97/29.97/59.94, 1080i 60Hz. My blackmagic ATEM 4K Production Switcher is able to handle this signals. NOW SDI is quite a different Story. SDI ouputs are QUAD SDI 4k, so each SDI port gives you a quad Section of the image in 1080 30p.(29.97) Setting the camera to HD 1080 60p outputs a nice clean 1080p 59.94 this Feed the ATEM can handle. Setting the camera to HD 1080 24/30p outputs via HD-SDI: 1080 30Psf/24Psf.... The ATEM cannot handle this. I have not found a way to swith this Progressive Segmented Frame output to the more common Progressive Frame.
Date published: 2015-10-22
Rated 5 out of 5 by from Yagh do you need it or no? I purchased this unit when it first came out, I liked the idea of having XLR inputs with full manual control over audio levels and of course the 10 bit SDI output. I purchased an Atomos unit to go with it and it served me well for my docos gigs. I loved the fact that that the unit sits below the gh4 and it somewhat compact. Another plus is that it gives you a 4:2:2 color space ale! For me that just sold this unit. Later I found that it exports 10 bit 4:2:2 out of the HDMI as well without the need of this unit but anyhow. If I were to purchase the YAGH now, I would not recommend it since the Shogun has just combined a 4k recorder with an xld breakout box in one, but the size is huge which makes it impractical for run and gun doco shoots. The build quality is somewhat ok, it feels very China made, I was expecting to have a solid feel like a DSLR body usually has. The rubber boots are of very bad quality they are hardly weatherproof, btw the unit does not do so well with humidity or for the matter of fact any dampness. As I found out leaving this unit in a tropical place for over six months, it created dampness on the board. The major Con of this unit in power, well your lack of power. You need to power it via 4 pin xlr 12v-14v. I think the only option is to use a couple of L series batteries and run a indipro adapter they sell. It keeps it all small and it gives you a 10 hour of usage.
Date published: 2015-09-09
Rated 4 out of 5 by from 10 bit and XLR but... I use it on almost every shoot. This basically turns a gh4 into the 4k capable af100 follow up that I wished they had made. The biggest plus for me is the XLR- gotta have it, don't like syncing in post with zoom or beachtek workarounds (just me personally). I feel as sure using this as I would if the camera had built in XLR inputs. 10 bit out looks great to a recorder, but find mostly I am recording to highest rate 4k on fast cards in camera, which offers a great picture on its own, so I don't use that much. The other nice thing is that it powers the unit- for long studio shoots, this is great. My only complaint is that I bought it prior to the atomos shogun, which will give you the almost same capabilities (albeit audio requires a jumper cable) PLUS a field monitor PLUS an ssd recorder to record all that nice 10bit 4k the imaging the hdmi on the camera puts out for a similar cost. Would recommend that instead at this point. But good job Panasonic for even making this and responding to the needs out in the field.
Date published: 2014-12-31
Rated 1 out of 5 by from Bought this when first introduced. Returned it . I bought this and the GH4 at B&H when first introduced. THEN, it was $ for the add on unit. What does that tell you? I felt the unit at that time was poorly documented, little if any instructions, and had some quirky functioning. It was obviously rushed to market. For that price, and the issues, I returned it - felt not ready and a price gouge. At $ Maybe.
Date published: 2015-10-27
Rated 3 out of 5 by from Great Customer Service I cannot speak on the greatness of the Yagh, because I realized that I didn't need this device because I use an external recorder for sound, but I can speak to how B&H handled my return -- with ease and a quick refund.
Date published: 2015-08-01
Rated 3 out of 5 by from Do your research Not compatible with all vendor's products so make sure that the devices you intend to connect will work with it.
Date published: 2016-01-18
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