Having a hard time finding something new in that price range with SDI output from Panasonic. It's not a Panasonic but the
JVC GY-HM200 4KCAM might be worth looking into for $1,885.00 (after $500 instant savings).
Partial Specs:
Image Sensor 1/2.33" CMOS sensor
Total Resolution: 12.4 Megapixel
Shutter Speed 1/4 to 1/10000
Gain 0, 3, 6, 9, 12, 15, 18, 21, 24 dB, Lolux (30,36 dB), AGC
Synchronization Internal sync
ND Filters Clear, 1/4, 1/16
Interface
Video Outputs 1 x 3G/HD/SD-SDI
1 x HDMI (Ultra HD output via HDMI only)
1 x AV output (3.5 mm stereo mini jack)
Audio Inputs 2 x XLR 3-pin (MIC, +48V / LINE)
1 x 3.5 mm stereo mini jack
Audio Output 1 x AV output (3.5 mm stereo mini jack)
Headphone 1 x 3.5 mm stereo mini jack
Remote 1 x 2.5 mm mini jack
USB 1 x HOST (Network connection)
1 x DEVICE (Mass Storage)