Bi-level Pulse

Return Loss: 30dB to 6 MHz

Levels: NTSC: 286mV ± 14mV (40 IRE ±2 IRE)

PAL: 307mV (43 IRE)

Rise Times (10-90%): NTSC 140ns ±20ns PAL: 200ns ±20ns

Duration: NTSC: 4.7us ±0.1 us PAL: 4.7us ±0.2us

Error Messages

The following error messages may appear when starting your switcher.

Table 5 Switcher Error Messages

Error Message

Description

Solution

DDR 0

Not Found

There is a problem with the switcher DDR

Re-start your switcher. If the problem

DDR 1

Not Found

memory. The switcher may be used but

persists, contact JVC Technical Support

DDR 0

& 1 Not Found

many features will be limited or disabled

for assistance.

 

 

 

 

 

 

Your switcher requires a Panel Module

Allow the PMC upgrade to proceed.

 

 

Controller (PMC) upgrade as part of a

 

 

Contact JVC Technical Support for

Upgrade PMC?

software upgrade. The switcher may be

assistance if you are unsure about

 

 

used without the PMC upgrade but may

 

 

upgrading your switcher.

 

 

respond in an unpredictable manner

 

 

 

 

 

 

 

GVG100 Protocol Supported Commands

The following tables list the Supported GVG100 commands and controls.

Table 6 GVG100 Supported Commands

Name

MLE/Keyer

Length

Byte Code

 

Data/Notes

 

Read MLE Program Bus

MLE

2

41

 

 

 

 

 

 

 

 

 

Read MLE Preset Bus

MLE

2

42

 

 

 

 

 

 

 

 

 

Read Keyer Bus

Keyer

2

43/44

 

 

 

 

 

 

 

 

 

Write MLE Program Bus

MLE

3

C1

<xpt>

An invalid xpt request

 

 

 

 

returns a protocol error

 

 

 

 

 

 

 

 

 

 

 

Write MLE Preset Bus

MLE

3

C2

<xpt>

An invalid xpt request

 

 

 

 

returns a protocol error

 

 

 

 

 

 

 

 

 

 

 

Write Keyer Bus

Keyer

3

C3/C4

<xpt>

An invalid xpt request

 

 

 

 

returns a protocol error

 

 

 

 

 

 

 

 

 

 

 

 

Read Analog

MLE/Keyer

3

45

<control>

 

 

 

 

 

 

 

 

 

Write Analog

MLE/Keyer

5

C5

<control>

<lsb>

<msb>

 

 

 

 

 

 

 

Read Light On/off

MLE/Keyer

3

46/47

 

 

 

 

 

 

 

 

 

Write Light On/off

MLE/Keyer

3

C6/C7

<lamp>

 

 

 

 

 

 

 

 

 

Read Wipe Pattern

MLE

2

48

 

 

 

 

 

 

 

 

 

MLE

3

C8

<wipe>

Valid wipes are 0-9, as

 

 

 

 

 

per the Wipe Pattern

Write Wipe Pattern

 

 

 

 

button numbers. An

 

 

 

 

 

invalid wipe number

 

 

 

 

 

returns a protocol error.

 

 

 

 

 

 

 

Read Transition Mode

MLE

2

4A

 

 

 

 

 

 

 

 

 

44

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JVC KM-H2500U, KM-H3000U GVG100 Protocol Supported Commands, Switcher Error Messages, GVG100 Supported Commands

KM-H2500, KM-H2500U, KM-H3000U, KM-H2500E, KM-H3000E specifications

The JVC KM-H3000E, KM-H2500E, KM-H3000U, KM-H2500U, and KM-H2500 are professional video production switchers designed to meet the demands of live broadcasting, events, and production environments. These switchers are renowned for their robust construction, intuitive operation, and advanced features that cater to a wide range of workflow requirements.

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