DF11 Communications Line Adapter - Revision history

Jnc: New cat

2022-08-15T19:23:54Z

New cat

2021-12-06T10:55:13Z

cover M5960

2021-12-06T02:48:31Z

+imgs

2021-12-05T20:15:12Z

+img

2021-10-15T18:16:01Z

‎External links: +engineering drawings

2021-08-11T22:23:27Z

DF11-G is 20mA

2021-08-11T21:26:10Z

DF11-K has active/passive jumpers

2021-08-02T17:17:26Z

Also DU11

2019-10-02T00:52:47Z

add EIA card for modem conn

2019-09-30T23:15:41Z

Confirm M596

← Older revision		Revision as of 19:23, 15 August 2022
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	* [http://www.bitsavers.org/pdf/dec/pdp10/periph/MP00068_DN87_Universal_Comm_System_Front_End_Jan76.pdf DN87 Field Maintenance Print Set] - contains complete engineering drawings for the DF11 boards on pp. 73-99		* [http://www.bitsavers.org/pdf/dec/pdp10/periph/MP00068_DN87_Universal_Comm_System_Front_End_Jan76.pdf DN87 Field Maintenance Print Set] - contains complete engineering drawings for the DF11 boards on pp. 73-99

−	[[Category: ~~UNIBUS~~ Serial Interfaces]]	+	[[Category: DEC Serial Interfaces]]

@@ Line 22: / Line 22: @@
 * DF11-K (M598, M973) - 4-wire opto-isolated 20mA adapter; '[[passive]]' mode (up to 2400 baud)
-The DF11-K has [[jumper]]s to allow each channel to be changed to [[20mA current loop serial line interface|'active']] mode.
+The M5960 is a later, apparently improved [[20mA current loop serial line interface#'Active' and 'passive' modes|'active']] 20mA  interface which replaces the M596. The M598 (DF11-K) has [[jumper]]s to allow each channel to be changed to 'active' mode.
 {{semi-stub}}

@@ Line 2: / Line 2: @@
 The '''DF11 Communications Line Adapter''' performs two functions for [[serial line]] communication [[interface]]s on [[PDP-11]] computers: i) converts from [[transistor-transistor logic|TTL]] signal levels to the [[voltage]]s, etc needed by a given serial line standard, and ii) produces the physical connector needed for that standard.
 A DF11 usually involves two [[DEC card form factor|single-width]] cards, one holding the circuitry needed, and the other providing, sometimes with a cable plugged into a [[Berg connector]], the interface connector. At least one dual-width adapter (the DF11-B) existed, though.
 The DF11 plugs into a common [[backplane]] with the serial interface. DF11's are used with [[DP11-A synchronous serial line interface|DP11]], [[DM11 asynchronous serial line interface|DM11]], [[DH11 asynchronous serial line interface|DH11]], [[DC11 asynchronous serial line interface|DC11]]; and [[DL11 asynchronous serial line interface|DL11]] and [[DU11 synchronous serial line interface|DU11]] [[UNIBUS]] serial interfaces (the latter two only in [[DD11-B backplane]]s, where the DF11 plugs into the A-B [[DEC edge connector contact identification|connectors]]). They may also be used in some versions of the [[PDP-11/05]] or [[PDP-11/10]].
 DF11 models include:

← Older revision		Revision as of 20:15, 5 December 2021
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		+	[[Image:M594.jpg\|250px\|thumb\|right\|M594 DF11-A TTL to EIA Level Converter]]
		+
	The '''DF11 Communications Line Adapter''' performs two functions for [[serial line]] communication [[interface]]s on [[PDP-11]] computers: i) converts from [[transistor-transistor logic\|TTL]] signal levels to the [[voltage]]s, etc needed by a given serial line standard, and ii) produces the physical connector needed for that standard.		The '''DF11 Communications Line Adapter''' performs two functions for [[serial line]] communication [[interface]]s on [[PDP-11]] computers: i) converts from [[transistor-transistor logic\|TTL]] signal levels to the [[voltage]]s, etc needed by a given serial line standard, and ii) produces the physical connector needed for that standard.

@@ Line 14: / Line 14: @@
 * DF11-K (M598, M973) - 4-wire opto-isolated 20mA adapter; '[[passive]]' mode (up to 2400 baud)
-The DF11-K has [[jumper]]s to allow each channel to be changed to 'active' mode.
+The DF11-K has [[jumper]]s to allow each channel to be changed to [[20mA current loop serial line interface|'active']] mode.
 {{semi-stub}}
 [[Category: UNIBUS Serial Interfaces]]

@@ Line 11: / Line 11: @@
 * DF11-BB (M587) - integral answer-only modem
 * DF11-F (M596, M973) - [[20mA current loop serial line interface|20m current loop]] adapter; '[[active]]' mode (up to 300 [[baud rate|baud]])
-* DF11-G (M595, BC01T-BC01Y) - custom interface to a Bell 301/303 modem
+* DF11-G (M595, BC01T-BC01Y) - custom 20mA interface to a Bell 301/303 modem
 * DF11-K (M598, M973) - 4-wire opto-isolated 20mA adapter; '[[passive]]' mode (up to 2400 baud)

@@ Line 7: / Line 7: @@
 DF11 models include:
-* DF11-A (M594, M957-BC01R) - [[EIA RS-232 serial line interface|EIA RS-232]] adapter
+* DF11-A (M594, M957-BC01R, M970-BC01R for modem cable) - [[EIA RS-232 serial line interface|EIA RS-232]] adapter
 * DF11-BA (M586) - integral [[modem]] for connection to a telephone line
 * DF11-BB (M587) - integral answer-only modem

@@ Line 10: / Line 10: @@
 * DF11-BA (M586) - integral [[modem]] for connection to a telephone line
 * DF11-BB (M587) - integral answer-only modem
-* DF11-F (M596?, M973)- [[20mA current loop serial line interface|20m current loop]] adapter (up to 300 [[baud rate|baud]])
+* DF11-F (M596, M973) - [[20mA current loop serial line interface|20m current loop]] adapter (up to 300 [[baud rate|baud]])
-* DF11-G - (M595, BC01T-BC01Y) custom interface to a Bell 301/303 modem
+* DF11-G (M595, BC01T-BC01Y) - custom interface to a Bell 301/303 modem
 * DF11-K (M598, M973) - 4-wire opto-isolated 20mA adapter (up to 2400 baud)