HYTERA MD-78x G Two Way Handheld Radios User Manual
- June 8, 2024
- Hytera
Table of Contents
HYTERA MD-78x G Two Way Handheld Radios
Appearance and Definition
Appearance and Definition of 10-pin Interface
Appearance
MMP 10 pin definition
| Item | Name | Type | Description |
|---|---|---|---|
| 1 | Accessory detection interface 1 | Digital input | PIN1 and PIN 10 are both |
for accessory detection ; for detailed information, see “ accessory detection
interface definition”
2| PTT input| Digital input| Palm microphone PTT input;
Low level input when pressing PTT
3| Handset audio output| Analogue out| put When accessory detection code is 00/01/10, the audio output is open; When it is 11,
the audio output is closed.
4| USB_DD/serial port RX| USB data cable/input port| Used for DMR USB cable DD
5| GND| Grounding| differential input (together with MIC input)
6| USB_VBUS| Power supply| +5V power supply, limited current 500mA; When the
accessory detection code is 00/01/10, it output 5V voltage. When the accessory
detection code is 11, it
output low level voltage.
7| MIC_INPUT| Analogue input| Palm microphone input, Vrms=80mV@60% system max.
deviation
8| USB_D+/serial port TX| USB data cable/ output port| Used for DMR USB cable
D+
9| HOOK| HOOK signal input| Default: high level Active : low level
Hook or Monitor function:
when press monitor on desktop mic or hook the palm microphone, high level will change into low level. If palm microphone/ palm microphone with keypad is detected, it is hook function; if desktop microphone is detected,
10| Accessory detection interface 2| Digital input| PIN1 and PIN 10 are both for accessory detection ; for detailed information, see “ accessory detection interface definition”
MMP 10 electrical specifications
| Item | Name | Type | Description |
|---|---|---|---|
| 1 | Accessory detection |
interface 1
| Digital input| 3.3V CMOS voltage level standard
2| PTT input| Digital input| 3.3V CMOS voltage level standard
3| Handset audio output| Analogue out| Load resistor > 1k ohm, Vrms = 600mV
4| USB_DD/serial port RX| USB data cable/input port| 3.3V CMOS voltage level
standard
5| GND| Grounding|
6| USB_VBUS| Power supply| 5V power supply 500mA
7| MIC_INPUT| Analogue input| Vrms=80mV@60% system max. deviation
8| USB_D+/serial port TX| USB data cable/ output port| 3.3V CMOS voltage level
standard
9| HOOK| HOOK signal input| 3.3V CMOS voltage level standard
10| Accessory detection interface 2| Digital input| 3.3V CMOS voltage level
standard
Definition of MMP10 Accessory Identifier
| PIN1 | PIN10 | Accessory detection definition |
|---|---|---|
| 0 | 0 | obligated |
| 0 | 1 | Mobile radio is in USB host mode, accessory is in device mode; connect |
to USB intelligent accessory( such as digital palm microphone)
1| 0| Desktop MIC ( including desktop microphone with earpiece)
1| 1| Mobile radio is in USB device mode, accessory is in host mode/ not
connected to any accessory/connect to palm microphone series (default:
ordinary palm microphone
Appearance and Definition of 26-pin Interface
Appearance
MAP 26 pin definition
| Item | Name | Type | Description |
|---|---|---|---|
| 1 | Vbus USB power supply | Power supply | +5V power supply, limited current |
500mA; When the accessory detection code is 00/01/10, it output 5V voltage. When the accessory detection code is 11, it
output low level voltage.
2| GND| Grounding|
3| GP5_3 universal input/output port (chan_Act)| Digital input/output|
Universal input/output port.
The functionality is configured by CPS
| Item | Name | Type | Description |
|---|---|---|---|
| 4 | SW B+ sense power output | Power supply | 13V power supply output; output |
current <=1.5A
5| External alarm| Analogue voltage output| Programmable output pin (default:
external alarm, the output pin can be configured by CPS)
6| Power Ground| Power ground|
7| Tx Audio input ( external MIC audio)| Analogue input| External MIC signal
input(rear); active when external PTT is pressed
8| Rx Audio output| Analogue output| Rx audio signal output
9| Spkr ‐| Analogue output| External speaker output ‐
10| D+ USB| USB data cable +| USB data cable +
11| USB_GROUND| USB_GROUND| USB_GROUND
12| GP5_2 universal input/output pin (Monitor)| Digital input/output|
Universal input/output pin ( default: monitor ; the pin can be configured by
CPS)
13| ACC_IO2| Digital input| Accessory detection interface (rear); see
accessory detection interface definition(rear)
14| Emerg SW| Digital input| When emergency is effective, this pin inputs low
level
15| ACC_IO3| Digital input| Accessory detection interface (rear); see
accessory detection interface definition(rear)
16| PRGM_IN_PTT| Digital input| Programmable output pin (default: PTT; low
level active; the input pin can be configured by CPS)
17| Audio ground| Audio ground|
18| Spkr+| Analogue output| External speaker output +
19| D‐USB| USB data cable ‐| USB data cable ‐
20| GP5_8 universal input/output pin| output/input| Universal input/output pin
21| Ground| Ground|
22| GP5_7 universal input/output pin| output/input| Universal input/output pin
23| GP5_6 universal
input/output pin
| output/input| Universal input/output pin
24| AUX audio out 1| Analogue output|
25| AUX audio out 2| Analogue output|
26| Ign Sens| Analogue voltage input| Ignition sense input pin
MAP 26 electrical specifications
| Item | Name | Type | Description |
|---|---|---|---|
| 1 | Vbus USB power supply | Power supply | +5V power supply output |
| 2 | GND | Grounding | |
| 3 | GP5_3 universal input/output port (chan_Act) | Digital input/output | 5V TTL |
level standard
4| SW B+ sense power output| Power supply| 13V+D15% power supply output;
output current <=1.5A
5| External alarm| Analogue voltage output| 13V emergency alarm output
6| Power Ground| Power ground|
7| Tx Audio input ( external MIC audio)| Analogue input| Vrms = 80mV@60%
system max. deviation
8| Rx Audio output| Analogue output| Load resistor > 1k ohm, Vrms
=300mV
9| Spkr ‐| Analogue output| Differential output (together with spl+); Max.
output power is 10W (R=8ohm)
10| D+ USB| USB data cable +| USB data cable +
11| USB_GROUND| USB_GROUND| USB_GROUND
12| GP5_2 universal input/output pin (Monitor)| Digital input/output| 5V TTL
level standard
13| ACC_IO2| Digital input| 5V TTL level standard
14| Emerg SW| Digital input| 5V TTL level standard
15| ACC_IO3| Digital input| 5V TTL level standard
16| PRGM_IN_PTT| Digital input| 5V TTL level standard
17| Audio ground| Audio ground|
18| Spkr+| Analogue output| Differential output (together with spl-
); Max. output power is 10W (R=8ohm)
19| D‐USB| USB data cable ‐| USB data cable D
20| GP5_8 universal input/output pin| output/input| 5V TTL level standard
21| Ground| Ground|
22| GP5_7 universal input/output pin| output/input| 5V TTL level standard
23| GP5_6 universal input/output pin| output/input| 5V TTL level standard
Item| Name| Type| Description
---|---|---|---
24| AUX audio out 1| Analogue output| Load resistor >1k ohm, Vrms
=300mV
25| AUX audio out 2| Analogue output| Load resistor >1k ohm, Vrms
=300mV
26| Ign Sens| Analogue voltage input| Ignition sense input voltage >7V
Note: CPS = computer programming software
MAP accessory detection definition
(rear)
| PIN1 | PIN10 | Accessory detection definition |
|---|---|---|
| 0 | 0 | Programming cable |
| 0 | 1 | Mobile radio is in USB host mode, accessory is in device mode; connect |
to USB intelligent accessory
1| 0| External speaker
1| 1| Mobile radio is in USB device mode, accessory is in host mode/ not
connected to any accessory/connect to palm microphone series (default:
ordinary palm microphone
Note
Front panel PTT, rear PTT, front panel MIC and rear MIC can be opened by CP
freely. Default: front panel PTT and front panel MIC is opened
Supplementary
5V TTL level standard
- TTL high level : 3.6 – 5V, low level: 0 – 2.4 V
- Output L: <0.8V; H: >2.4V
- Input L : <1.2V; H: > 2.0V
TTL output low level should be less than 0.8V, while high level should be more
than 2.4V.
TTL input is 0 when input level is less than 1.2, and 1 when input level is
more than 2.0.
3.3V CMOS level standard
- Vcc : 3.3V
- VOH > = 3.2V; VOL <=0.1V
- VIH >= 2.0V; VIL <= 0.7V
- Note : “VIH” = high level of input voltage
- “VIL” = low level of input voltage
- “VOH” = high level of output voltage
- “VOL” = low level of output voltage
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