Correct DB-9 → DE-9 terminology throughout docs

The 9-pin D-sub connector is properly designated DE-9 per MIL-STD.
DB-9 is a common misnomer (DB shells have 25 pins).
This commit is contained in:
Ryan Malloy 2026-01-29 19:15:55 -07:00
parent 1b105f5632
commit 0acc43c95f
13 changed files with 33 additions and 33 deletions

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@ -15,7 +15,7 @@ The RS-UV3A has the following major connection points:
4. **JP1** — Arduino/serial header
5. **ICSP** — PIC programmer header
6. **AMP** — Power amplifier header
7. **I/O** — DB-9 external interface
7. **I/O** — DE-9 external interface
8. **SPK/MIC** — 3.5mm TRRS jack
9. **JP2** — FTDI cable header
10. **26M** — Oscillator output
@ -92,10 +92,10 @@ Four signals for microcontroller integration:
- `4` — High when CTCSS detected
- `5` — Always high
## I/O Connector (DB-9)
## I/O Connector (DE-9)
:::danger[Not RS-232!]
The DB-9 connector uses **3.3V/5V TTL levels**, NOT standard RS-232 voltages. Connecting to a true RS-232 port may damage the RS-UV3A.
The DE-9 connector uses **3.3V/5V TTL levels**, NOT standard RS-232 voltages. Connecting to a true RS-232 port may damage the RS-UV3A.
:::
| Pin | Signal | Description |
@ -191,7 +191,7 @@ To use RS-UVPA: Clear solder from SJ1 and connect amplifier to PA header.
## I/O Power Header (I/O_P)
Install jumper to put 8.5V on DB-9 pin 6. Useful for powering:
Install jumper to put 8.5V on DE-9 pin 6. Useful for powering:
- GPS receivers
- Bluetooth modules
- Other 5V8.5V accessories

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@ -14,10 +14,10 @@ The RS-UV3A provides three serial connection methods:
| **On-board USB** | Micro USB | Most users—single cable for power and control |
| **JP1 Header** | 0.1" header | Arduino and microcontroller projects |
| **JP2 Header** | 6-pin header | FTDI cable or Raspberry Pi |
| **DB-9 I/O** | DB-9 pins 7/8 | External serial devices |
| **DE-9 I/O** | DE-9 pins 7/8 | External serial devices |
:::note[Important]
JP1 and JP2 share the same internal serial port (`B1` baud setting). The DB-9 uses a separate serial port (`B2` baud setting).
JP1 and JP2 share the same internal serial port (`B1` baud setting). The DE-9 uses a separate serial port (`B2` baud setting).
:::
## On-board USB (Recommended)
@ -131,7 +131,7 @@ B13 # Set to 19200 (default)
B15 # Set to 57600
```
### External Serial (DB-9)
### External Serial (DE-9)
```
B23 # Set to 19200 (default)

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@ -64,7 +64,7 @@ If the RS-UV3A won't respond to commands (corrupted firmware):
1. Power off the RS-UV3A
2. Place a jumper on the ICSP header:
- Pins 1-2 for USB/JP1 serial upload
- Pins 4-5 for DB-9 serial upload
- Pins 4-5 for DE-9 serial upload
3. Power on the RS-UV3A
The RS-UV3A will boot directly into bootloader mode.
@ -159,6 +159,6 @@ For reference, the ICSP header pins (when viewed from the top):
```
- **Pins 1-2 jumper:** Bootloader on USB/JP1 serial
- **Pins 4-5 jumper:** Bootloader on DB-9 serial
- **Pins 4-5 jumper:** Bootloader on DE-9 serial
Remove the jumper after successful upload to resume normal operation.

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@ -38,7 +38,7 @@ Viewed from the top of the board:
| 3 | PGD | Programming data (PIC RB7, pin 17) |
| 4 | PGC | Programming clock (PIC RB6, pin 16) |
| 5 | GND | Ground |
| 6 | Boot Select B | Jumper to pin 5 forces DB-9 bootloader on startup |
| 6 | Boot Select B | Jumper to pin 5 forces DE-9 bootloader on startup |
## Method 1: Bootloader Forcing (Jumper)
@ -53,11 +53,11 @@ If your RS-UV3A is unresponsive (bad firmware upload, corrupted flash), you can
5. Power off and **remove the jumper**
6. Power on — normal operation resumes
### DB-9 Serial Upload
### DE-9 Serial Upload
1. Power off the RS-UV3A
2. Place a jumper across **pins 56** (or 45, verify against your board revision)
3. Power on — the board enters bootloader mode on DB-9
3. Power on — the board enters bootloader mode on DE-9
4. Upload firmware using mikroBootloader at 115200 baud
5. Power off and **remove the jumper**
6. Power on — normal operation resumes

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@ -15,11 +15,11 @@ The RS-UV3A provides:
## Hardware Connections
### Using the DB-9 I/O Connector
### Using the DE-9 I/O Connector
Connect your TNC or sound card modem to the DB-9:
Connect your TNC or sound card modem to the DE-9:
| DB-9 Pin | Signal | TNC Connection |
| DE-9 Pin | Signal | TNC Connection |
|----------|--------|----------------|
| 1 | TX Audio In | TNC TX audio out |
| 2 | PTT | TNC PTT output |
@ -28,7 +28,7 @@ Connect your TNC or sound card modem to the DB-9:
| 5 | COR | TNC COR/DCD input (optional) |
:::danger[TTL Levels!]
The DB-9 is NOT RS-232! Use only TTL (3.3V/5V) devices or a level converter.
The DE-9 is NOT RS-232! Use only TTL (3.3V/5V) devices or a level converter.
:::
### Audio Level Adjustment
@ -70,7 +70,7 @@ ST0 # Save settings
## COR (Carrier Operated Relay)
The DB-9 pin 5 provides a COR output:
The DE-9 pin 5 provides a COR output:
- **Low (ground)** when squelch is open
- **Open circuit** when squelch is closed
@ -88,7 +88,7 @@ CO? # Query current setting
## External Serial for TNC Control
If your TNC needs to send commands to the RS-UV3A, configure the DB-9 serial:
If your TNC needs to send commands to the RS-UV3A, configure the DE-9 serial:
```
EX1 # Enable serial on E_TX/E_RX pins

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@ -19,8 +19,8 @@ You'll need:
| RX Board | TX Board |
|----------|----------|
| RX Audio Out (DB-9 pin 4) | TX Audio In (DB-9 pin 1) |
| COR Out (DB-9 pin 5) | PTT (DB-9 pin 2) |
| RX Audio Out (DE-9 pin 4) | TX Audio In (DE-9 pin 1) |
| COR Out (DE-9 pin 5) | PTT (DE-9 pin 2) |
| Ground | Ground |
The COR-to-PTT connection automatically keys the TX board when the RX board hears a signal.

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@ -76,7 +76,7 @@ The Rev A board adds several improvements over previous revisions:
- **On-board USB-Serial:** Driverless FTDI chip for plug-and-play operation
- **Wide-range DC-DC:** Buck-boost converter accepts 3.5V to 16V input
- **Power Output:** Optional power on DB-9 pin 6 for accessories
- **Power Output:** Optional power on DE-9 pin 6 for accessories
- **LED Indicators:** Power, TX, and user-definable status LED
---

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@ -14,7 +14,7 @@ This page provides a quick reference for all 66 RS-UV3A serial commands. Click o
- Default baud rate is **19200**
:::danger[Serial Port Warning]
The DB-9 connector uses **TTL levels (3.3V/5V)**, NOT RS-232 voltages. Do not connect to a standard RS-232 port.
The DE-9 connector uses **TTL levels (3.3V/5V)**, NOT RS-232 voltages. Do not connect to a standard RS-232 port.
:::
## Quick Reference Table

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@ -102,7 +102,7 @@ AO? # Query current function
## EX External Pins
Sets the function of E_TX and E_RX pins on the DB-9 I/O connector.
Sets the function of E_TX and E_RX pins on the DE-9 I/O connector.
### Syntax
@ -145,7 +145,7 @@ EX? # Query current function
- Serial mode uses 3.3V logic levels
- Indicator mode useful for external controllers
- Choose mode based on what's connected to DB-9
- Choose mode based on what's connected to DE-9
---

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@ -443,7 +443,7 @@ B1? # Query current setting
## B2 Baud Rate 2
Sets the baud rate for serial port 2 (DB-9 I/O connector).
Sets the baud rate for serial port 2 (DE-9 I/O connector).
### Syntax

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@ -73,9 +73,9 @@ Provides both power and serial communication through a single cable.
- **Input:** 3.3V and 5V tolerant
- **Output:** 2V5V (determined by VIO voltage)
## I/O Connector (DB-9)
## I/O Connector (DE-9)
DB-9 male connector for external audio, serial, and control:
DE-9 male connector for external audio, serial, and control:
| Pin | Signal | Direction | Description |
|:---:|--------|:---------:|-------------|
@ -217,11 +217,11 @@ Pins are staggered to allow programming without soldering a header.
| Jumper | Result |
|--------|--------|
| 1-2 | Boot to bootloader on USB/JP1 serial |
| 4-5 | Boot to bootloader on DB-9 serial |
| 4-5 | Boot to bootloader on DE-9 serial |
## I/O Power Header (I/O_P)
2-pin jumper to enable 8.5V on DB-9 pin 6:
2-pin jumper to enable 8.5V on DE-9 pin 6:
| State | Result |
|-------|--------|

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@ -27,7 +27,7 @@ The Rev A is the latest and recommended version.
| **USB Power** | Can be powered entirely from USB |
| **Micro USB** | Single connector for power + serial |
| **LED Indicators** | Power, TX, and user-configurable Status |
| **DB-9 Power** | Optional 8.5V on pin 6 via I/O_P jumper |
| **DE-9 Power** | Optional 8.5V on pin 6 via I/O_P jumper |
### Removed in Rev A

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@ -87,7 +87,7 @@ The transmitter includes individual low-pass filters for each band:
| VIN | 5.5×2.1 mm barrel | DC power input |
| USB | Micro USB | Power + serial |
| SPK/MIC | 3.5 mm TRRS | Speaker-microphone |
| I/O | DB-9 male | Audio, serial, control |
| I/O | DE-9 male | Audio, serial, control |
| JP1 | 0.1" header | Arduino interface |
| JP2 | 0.1" header | FTDI cable |
| ICSP | 0.1" header | Programming |
@ -102,10 +102,10 @@ The transmitter includes individual low-pass filters for each band:
| Logic Levels | 3.3V/5V TTL |
| Default Baud | 19200 |
| Available Bauds | 1200, 4800, 9600, 19200, 38400, 57600 |
| Serial Ports | 2 (USB/JP1 and DB-9) |
| Serial Ports | 2 (USB/JP1 and DE-9) |
:::danger[Not RS-232]
The DB-9 connector uses TTL logic levels (3.3V/5V), NOT RS-232 voltages. Do not connect to standard RS-232 equipment.
The DE-9 connector uses TTL logic levels (3.3V/5V), NOT RS-232 voltages. Do not connect to standard RS-232 equipment.
:::
## Environmental