{"id":1036,"date":"2016-11-30T10:36:03","date_gmt":"2016-11-30T08:36:03","guid":{"rendered":"http:\/\/new.rigexpert.com\/uk\/25-pin-transceiver-connector-on-the-rear-panel-of-rigexpert-interfaces\/"},"modified":"2025-12-17T20:59:50","modified_gmt":"2025-12-17T18:59:50","slug":"25-pin-transceiver-connector-on-the-rear-panel-of-rigexpert-interfaces","status":"publish","type":"page","link":"https:\/\/old.rigexpert.com\/uk\/25-pin-transceiver-connector-on-the-rear-panel-of-rigexpert-interfaces\/","title":{"rendered":"25-pin Transceiver Connector on the rear panel of RigExpert Interfaces"},"content":{"rendered":"

25-pin Transceiver Connector on the rear panel of RigExpert Interfaces<\/h1>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Pin<\/p>\n<\/th>\n

\n

Pin name<\/p>\n<\/th>\n

\n

Comment<\/p>\n<\/th>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

FSK_OC<\/p>\n<\/td>\n

\n

FSK open-collector output<\/p>\n<\/td>\n<\/tr>\n

\n

14<\/p>\n<\/td>\n

\n

FSK_PULLUP<\/p>\n<\/td>\n

\n

Pullup to +5V through 4.7K resistor<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

\n

DIT<\/p>\n<\/td>\n

\n

CW paddle input (dit), shorten to ground – RigExpert Plus\/TI-5 only<\/p>\n<\/td>\n<\/tr>\n

\n

15<\/p>\n<\/td>\n

\n

DAH<\/p>\n<\/td>\n

\n

CW paddle input (dah), shorten to ground – RigExpert Plus\/TI-5 only<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\n

VCC<\/p>\n<\/td>\n

\n

+5V output (USB power line)<\/p>\n<\/td>\n<\/tr>\n

\n

16<\/p>\n<\/td>\n

\n

PTT5V<\/p>\n<\/td>\n

TTL-level PTT output (5V in transmit, 0V in receive mode)<\/td>\n<\/tr>\n
\n

4<\/p>\n<\/td>\n

\n

CW_OC<\/p>\n<\/td>\n

\n

Open-collector CW output<\/p>\n<\/td>\n<\/tr>\n

\n

17<\/p>\n<\/td>\n

PTT_OC<\/td>\n\n

Open-collector PTT output<\/p>\n<\/td>\n<\/tr>\n

\n

5<\/p>\n<\/td>\n

DCD<\/td>\n\n

DCD (squelch) input<\/p>\n<\/td>\n<\/tr>\n

\n

18<\/p>\n<\/td>\n

\n

12V_MAX<\/p>\n<\/td>\n

\n

+12V output (generated by MAX232 chip)<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

\n

SPK_TRCVR2<\/p>\n<\/td>\n

\n

Transceiver audio output (speaker), sub receiver<\/p>\n<\/td>\n<\/tr>\n

\n

19<\/p>\n<\/td>\n

\n

RXD_OE<\/p>\n<\/td>\n

\n

Serial input (5V levels), connect RXD5V to VCC to activate this input<\/p>\n<\/td>\n<\/tr>\n

\n

7<\/p>\n<\/td>\n

\n

CIV_IN<\/p>\n<\/td>\n

\n

CI-V input (ICOM transceivers), pulled up to 12V_TRCVR with 4.7K<\/p>\n<\/td>\n<\/tr>\n

\n

20<\/p>\n<\/td>\n

\n

12V_TRCVR<\/p>\n<\/td>\n

\n

Connect to VCC to power the CIV_IN input<\/p>\n<\/td>\n<\/tr>\n

\n

8<\/p>\n<\/td>\n

\n

CIV_OUT<\/p>\n<\/td>\n

\n

CI-V open-collector output (ICOM transceivers), connect to CIV_IN<\/p>\n<\/td>\n<\/tr>\n

\n

21<\/p>\n<\/td>\n

\n

CO_PULLUP<\/p>\n<\/td>\n

\n

Pullup to +5V through 4.7K resistor<\/p>\n<\/td>\n<\/tr>\n

\n

9<\/p>\n<\/td>\n

\n

TXD12V<\/p>\n<\/td>\n

\n

RS-232-compatible serial output (\u00b112V levels)<\/p>\n<\/td>\n<\/tr>\n

\n

22<\/p>\n<\/td>\n

\n

RXD12V<\/p>\n<\/td>\n

\n

RS-232-compatible serial input (\u00b112V levels)<\/p>\n<\/td>\n<\/tr>\n

\n

10<\/p>\n<\/td>\n

\n

TXD5V<\/p>\n<\/td>\n

\n

Serial output (5V levels)<\/p>\n<\/td>\n<\/tr>\n

\n

23<\/p>\n<\/td>\n

\n

RXD5V<\/p>\n<\/td>\n

\n

Serial input (5V levels)<\/p>\n<\/td>\n<\/tr>\n

\n

11<\/p>\n<\/td>\n

\n

GND<\/p>\n<\/td>\n

\n

Digital ground<\/p>\n<\/td>\n<\/tr>\n

\n

24<\/p>\n<\/td>\n

\n

GND<\/p>\n<\/td>\n

\n

Digital ground<\/p>\n<\/td>\n<\/tr>\n

\n

12<\/p>\n<\/td>\n

\n

SPK_TRCVR<\/p>\n<\/td>\n

\n

Transceiver audio output (speaker)<\/p>\n<\/td>\n<\/tr>\n

\n

25<\/p>\n<\/td>\n

\n

MIC_TRCVR<\/p>\n<\/td>\n

\n

Transceiver audio input (microphone)<\/p>\n<\/td>\n<\/tr>\n

\n

13<\/p>\n<\/td>\n

\n

AGND_TRCVR<\/p>\n<\/td>\n

\n

Audio signal ground<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Audio in\/out:<\/p>\n

    \n
  1. SPK_TRCVR is connected to the transceiver speaker (or line out) output.<\/li>\n
  2. SPK_TRCVR is connected to the transceiver speaker (or line out) output for the sub receiver (if available).<\/li>\n
  3. MIC_TRCVR is connected to the transceiver microphone (or line in) input.<\/li>\n
  4. AGND_TRCVR is connected to the transceiver ground (connection point should be as close to the transceiver as possible).<\/li>\n<\/ol>\n

    RigExpert interfaces decouple audio in\/out signals from computer signals using transformers, which prevents interference caused by parasitic current in grounding.<\/p><\/blockquote>\n

    FSK output:<\/p>\n

    \n

    FSK_OC is an open-collector output, sinking 50mA maximum (using BC817 NPN transistor). Connect this pin to FSK_PULLUP to obtain the TTL-level output.<\/p><\/blockquote>\n<\/div>\n

    PTT and CW outputs:<\/p>\n

    \n

    PTT_OC and CW_OC are open-collector outputs, sinking 50mA maximum (using BC817 NPN transistors). PTT5V is a TTL-level PTT output (5V in transmit, 0V in receive mode), output current is 5mA maximum.<\/p><\/blockquote>\n<\/div>\n

    CW paddle inputs:<\/p>\n

    \n

    DIT and DAH are CW paddle inputs (single or double paddle for yambic keying), pulled up to +5V with 4.7K resistors.<\/p><\/blockquote>\n<\/div>\n

    Serial in\/out:<\/p>\n

    RigExpert interfaces provide various methods of connecting serial in\/out lines with different signal levels to the virtually any model of transceiver. This only requires shortening some pins on the RigExpert transceiver connector.<\/p>\n

      \n
    • RS-232-compatible mode uses TXD12V and RXD12V lines with \u00b112V signal levels, provided by MAX232 interface chip.<\/li>\n
    • CI-V mode uses CIV_IN and CIV_OUT lines (should be shortened together). CIV_IN is internally pulled up with 4.7K resistor to 12V_TRCVR, which should be connected to VCC.<\/li>\n
    • TTL-level (5V) mode uses TXD5V and RXD5V lines. Signal polarity is opposite to RS-232 mode.<\/li>\n
    • Yet another TTL-level mode (signal polarity is the same as with RS-232 mode) uses CIV_OUT output (should be connected to CO_PULLUP) and CIV_IN input (12V_TRCVR line should be connected to the VCC output). It is better to use RXD_OE input in this mode (RXD5V should be connected to VCC to activate this input).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

      25-pin Transceiver Connector on the rear panel of RigExpert Interfaces Pin Pin name Comment 1 FSK_OC FSK open-collector output 14 FSK_PULLUP Pullup to +5V through 4.7K resistor 2 DIT CW paddle input (dit), shorten to ground – …<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":""},"_links":{"self":[{"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/pages\/1036"}],"collection":[{"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/comments?post=1036"}],"version-history":[{"count":2,"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/pages\/1036\/revisions"}],"predecessor-version":[{"id":1043,"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/pages\/1036\/revisions\/1043"}],"wp:attachment":[{"href":"https:\/\/old.rigexpert.com\/uk\/wp-json\/wp\/v2\/media?parent=1036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}