manawyrm has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-e1-hardware/+/27317 )

Change subject: manual: add info and renders to show to set TE/NT mode ......................................................................

manual: add info and renders to show to set TE/NT mode

The page break is currently a bit ugly, but I didn't see an easy way to fix it. The images and info text should make the process much clearer.

Change-Id: I5999dc60850da2cd02d9bbc7db5727cdebf041c6 --- M doc/manuals/chapters/hardware.adoc A doc/manuals/images/nt_t.png A doc/manuals/images/te_t.png 3 files changed, 18 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-e1-hardware refs/changes/17/27317/1

diff --git a/doc/manuals/chapters/hardware.adoc b/doc/manuals/chapters/hardware.adoc index 0e129c2..a306648 100644 --- a/doc/manuals/chapters/hardware.adoc +++ b/doc/manuals/chapters/hardware.adoc @@ -64,6 +64,24 @@ different pin-out. Particularly, you cannot use an Ethernet cross-over cable as an E1 cross-over!

+==== Switching between TE/NT mode + +The icE1usb is shipped in TE configuration. Using a 1:1 patch cable, it can be connected to another device in NT mode. + +If you want to connect to a PBX, BTS, etc., you'll need to use an E1 cross-over cable or switch to NT mode. + +To change the mode, unscrew the 2 PH0 screws on the side with the 2 RJ45 jacks. You'll also need to unscrew the nut on the SMA jack on the other side. +After that, the cover plate and rubber gasket around the 2 RJ45 jacks can be removed. The PCB can be slid out of the case. + +[frame="none"] +[grid="none"] +|=== +|image:images/te_t.png[width=250,title="icE1usb jumpered for TE mode"] |image:images/nt_t.png[width=250,title="icE1usb jumpered for NT mode"] +| *TE mode* (default) | *NT mode* | +|=== + + +Each 2x4 jumper block is connected to the nearest RJ45 connector. + === Connectors on USB side

image::images/icE1usb-usb_side.jpg[width=400,title="USB side of icE1usb"] diff --git a/doc/manuals/images/nt_t.png b/doc/manuals/images/nt_t.png new file mode 100644 index 0000000..73143b7 --- /dev/null +++ b/doc/manuals/images/nt_t.png Binary files differ diff --git a/doc/manuals/images/te_t.png b/doc/manuals/images/te_t.png new file mode 100644 index 0000000..54d8343 --- /dev/null +++ b/doc/manuals/images/te_t.png Binary files differ