Test Modes - Orban OPTIMOD-FM 5500 Operation Manual

OPTIMOD-FM DIGITAL
control in the on-air preset until the MPX Power gain reduction meter on the 5500
indicates an average of 3 dB of gain reduction. Save the result as a User Preset.
Do not reduce the drive level to the 5500 by turning down the driving Optimod's
output level control because this does not decrease distortion in the Optimod's peak
limiter, unlike turning down the M

Test Modes

The Test Modes screen allows you to switch between O
When you switch to B
restored when you switch back to O
Table 3-10 shows the facilities available. Facilities are self-explanatory, except for the
following:

If you are using the composite output, a T
modulation when the pilot tone is on and set to 9% injection. If you are using
either the analog or digital outputs, a T
modulation.

In B mode, preemphasis is still applied to the signal path. The B
YPASS
control calibration allows enough internal headroom to make swept frequency
response measurements without internal clipping. When the B
trol is set to 0.0 dB and the AI R
gain of approximately –17 dB from the analog input to the analog output at 100
Hz. If the AO P
preemphasis, the gain from analog input to analog output will be approxi-
mately 0 dB at 15 kHz.
Setup: Test
Parameter
Labels
MODE
BYPASS GAIN
TONE FREQ
TONE LVL
TONE CHAN
PILOT
ULTIBAND
or T , the preset you have on air is saved and will be
YPASS ONE
PERATE
VU control is set to 0.0 dBu, you will observe a
EF
- control is set to P
RE E
Units Default
--- Operate
dB 0.0
Hz 400
% 91
--- L+R
--- ON
Table 3-10: Test Modes
C control.
LIPPING
PERATE
.
setting of 91% produces 100%
L
ONE VL
setting of 100% produces 100%
L
ONE VL
- and the 5500 is configured for 75 µs
RE E
Range (CCW to CW)
Operate, Bypass, Tone
18 ... +25
16, 20, 25, 31.5, 40, 50,
63, 80, 100, 125,
200, 250, 315, 400, 500,
630, 800, 1000, 1250, 1600,
2000, 2500, 3150, 4000, 5000,
6300, 8000, 9500, 10000,
12500, 13586.76, 15000
0 ... 121
L+R, LR, LEFT; RIGHT
ON, OFF
OPERATION
, B , and T .
YPASS ONE
G
YPASS AIN
con-
G
YPASS AIN
Step
---
1
LOG
160,
1
---
---
3-55