![background image](http://html.mh-extra.com/html/sage/930i/930i_operating-manual_799956164.webp)
5-117
© Sage Instruments 2000
9100-2930-02 01/31/00
Sage Instruments 930i Communications Test Set
5-57 OPTION MENU #:57 DS-0 LOOPBACK
OPTION MENU #:57, DS-0 LOOPBACK, is available only when
Purchased Option 930i-22 , DS1 and
DSO BERT, is installed. This feature enables the 930i to loopback the selected PCM channel in
TERMINATE or drop/insert (D&I) modes. This is similar to a hard loopback in operation because no
codes are involved. The number of bits looped depends on the signalling option selected in trunk type
set up. Robbed bit is 7 bits looped, clear channel is 8 bits looped.
To put the 930i in loopback mode:
1. Press the Option Menu function key.
2. Use the Up/Down Arrow keys to scroll through the option menus, OR select 57 using the
numeric keypad and then press the Option Menu function key. The display reads:
OPTION MENU #: DS-O LOOPBACK
K1
K2
K3
K4
3. Press ENT or any soft key (K1-K4) to activate your selection. The
LOOPBACK
display reads:
DIGITAL LOOPBACK VF LOOPBACK
K1
K2
K3
K4
The default selection is
DIGITAL LOOPBACK
.
4. Press K1 to loopback digital patterns (511 or 2047 bit long patterns), OR press K3 under
VF
LOOPBACK
if tones (1004 Hz) are being sent.
5-57.1 Digital Loopback
If you selected
DIGITAL LOOPBACK
, the display reads:
DIGITAL LOOPBACK CH#22 LOOP EXIT
K1
K2
K3
K4
In the above example, Channel 22 (CH# 22) has been looped back. You can select a channel between
1 and 24 under PCM trunk type. (Refer to
Section 4, PCM Operation,
for setup information.)
To setup a digital loopback:
1. Press K3 under
LOOP
. A cursor will appear over
LOOP
indicating that the selected channel has
been looped back.
Option Menu #:
57
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Summary of Contents for 930i
Page 11: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 19: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 43: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 203: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 235: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...