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© Sage Instruments 2000
9100-2930-02 01/31/00
Sage Instruments 930i Communications Test Set
Front Panel
Operation
To measure Trans hybrid loss:
1. Connect the 930i to the 4-wire side of the hybrid and set the trunk type to dry circuit.
2. Short the 2-wire side of the hybrid using a jumper cable. (If you cannot access the Hybrid, leave
the THL at the default of
0 dB
in step 4.)
3. Press the Return Loss function key on the 930i. Use ERL or OSC with a frequency of 1020 Hz.
This is mid-band for the measurement.
4. Press K3 to measure the THL. The value will appear over K3.
5. Press K3 again and the 930i will prepare to set the measured value as the THL correction OR
use the numeric keypad to enter the desired number when the cursor is flashing over the
measured value.
If your return loss reading is unusually low, check the THL value entered to make sure you do not have
a measured value entered as the THL.
6. Press K3 again and the measured value will be accepted. The display reads:
MEAS THL
.
3-2.4 Send Tone Function Key
To send a tone:
1. Press the Send Tone function key.
The display reads:
SENDTONE 1020 Hz -16.0dBm OFF
K1
K2
K3
K4
2. Press K1 to change the frequency, OR K3 to change the level.
3. Use the numeric keypad to enter the desired frequency or level and press ENT.
• A valid frequency is between
20 Hz
and
5000 Hz
.
• A valid level is between
-60.0 dBm
and
+12 dBm
.
4. Press K4 to toggle between tone
ON
and tone
OFF
. If the tone is
ON
, the display reads:
TR
(Tip/
Ring),
T1R1
(Tip1/Ring1),
PCM1
or
PCM2
, depending upon the trunk type and direction. If
OFF
is selected, no tone is sent.
When a tone is being sent with the 930i performing a different function, the LED beside the Send
Tone function key will flash to alert you to the fact that tone is being sent.
If no tone is desired, return to the Send Tone function and press K4 . The display reads:
OFF
.
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Содержание 930i
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