| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1190.1 | 48V DC pin outs | WOTVAX::64021::Tim_Banks | Network Mercenary | Tue Jul 26 1994 11:24 | 57 |
| From: DEC:.lkg.delni::MACARTHUR "26-Jul-1994 0843" 26-JUL-1994 14:21:46.96
To: WARNUT::BANKST
CC: MACARTHUR
Subj: RE: HUB 900 and 48V pinouts
Tim,
I've been meaning to post this information in the notes file for a
few weeks now, but haven't had a chance to do it. Here's the information
you're looking for:
BBU Connector Pinout (External 48V)
-----------------------------------
Pin # Signal Name
----- -----------
1 PM_2 H
2 PM_1 H
3 PM_3 H
4 PM_ALE H
5 PM_RW H
6 NO CONNECTION
7 +48V
8 +48V
9 +48V
10 BBU_REQ L
11 PM_DS H
12 PM_4 H
13 +5V
14 NO CONNECTION
15 NO CONNECTION
16 +48V
17 48V_RTN (-48V)
18 48V_RTN (-48V)
19 BAT_EN H
20 PM_0 H
21 PM_5 H
22 GND
23 NO CONNECTION
24 48V_RTN (-48V)
25 48V_RTN (-48V)
26 48V_RTN (-48V)
The connector part number that resides on the HUB is 12-36226-03. It's a
26 pin Subminiature D Sub connector. The mating connector does not have a
DEC part number assigned yet, but will in the very near future.
The information provided above is taken from the DECHUB 900 System Spec-
ification written by Rich Graham. Let me know if you have any further
questions.
I'm in the process of ordering a cable that will be used to test the
operation
of the HUB with an external 48V source. I'll let you know if I run into any
problems or surprises.
Bob
|
| 1190.2 | Any New info? | CHOWDA::FAHEY | Are we having 'FUN' yet? | Thu Jul 13 1995 09:16 | 5 |
| Has there been an up date on this? I too have a customer that wants to
run the hub from 48VDC. Do we have a part number for the cable?
Thanks
Jim
|
| 1190.3 | I poked around on this....no answer yet on part number | NETCAD::BATTERSBY | | Thu Jul 13 1995 11:00 | 6 |
| Jim, Bob Macarthur is currently off site on a business trip.
I've poked around on this to some folks and haven't come up with
an answer yet on a possible cable part number. Maybe we'll have an
answer soon. Stay tuned.
Bob
|
| 1190.4 | what do all these pins do? | MEOC02::MCCOY | want peace ? -> work for justice | Thu Aug 10 1995 23:14 | 37 |
| .1 gives the pinout. Please can we have an explanation of the function
of those things that are NOT +/- 48V ?
For example, do any of these pins provide signals suitable for
connection into exchange alarm systems ? An alarm would be required
when a Power supply failed, and ideally when a module in the hub
failed.
BBU Connector Pinout (External 48V)
-----------------------------------
Pin # Signal Name
----- -----------
1 PM_2 H
2 PM_1 H
3 PM_3 H
4 PM_ALE H
5 PM_RW H
6 NO CONNECTION
10 BBU_REQ L
11 PM_DS H
12 PM_4 H
13 +5V is this and input or output ?
14 NO CONNECTION
15 NO CONNECTION
19 BAT_EN H
20 PM_0 H
21 PM_5 H
22 GND is this a signal ground as opposed to -48V ?
23 NO CONNECTION
Is the 48V DC definitely an Input only (ie is there a
diode/rectifier which prevents power coming OUT of the DEChub900.
If memory serves me correctly, telepone exchanges usually have the
+48 rail grounded. Is this the case with the HUB900 ?
|