CG635 Remote Programming
33
CG635 Synthesized Clock Generator
i Value
0
Q / Q
¯ low voltage
1
Q / Q
¯ high voltage
Example
QOUT 1, 2.1<CR> Set Q / Q
¯ high voltage to 2.1 volts.
QOUT?0<CR>
Query Q / Q
¯ low voltage.
RPHS Relative
Phase
Define the current phase to be zero degrees. This command does not affect
the output.
RUNS(?){i} Running
State
Set (query) the running state of outputs {to i}. If i is 0, the outputs are in the
stopped state. RUNS 0 stops the output and also sets stop level low. If i is 1, the
output is not stopped.
SHDP(?){i}
Show Display
Set (query) the current state of the display. If i is 0, the display is turned off. If i
is 1, the display is turned on.
SLVL(?){i} Stop
Level
Set (query) the level at the output in the stopped state {to i}. If i is 0, the stop
level is low. If i is 1, the stop level is high. If i is set to 2, the stop level
is toggled.
STDC(?){i}
Standard CMOS
Set (query) the CMOS output {to i}.
The parameter i selects the standard level.
i
Standard CMOS Level
0
1.2 V standard CMOS
1
1.8 V standard CMOS
2
2.5 V standard CMOS
3
3.3 V standard CMOS
4
5.0 V standard CMOS
The query form returns –1 if the current levels do not correspond to one of the
standard levels. This indicates that the VAR LED is on.
STDQ(?){i}
Standard Q / Q
¯
Set (query) the Q / Q
¯ outputs {to i}.
The parameter i selects the standard level.
i Standard
Q
/
Q
¯ Level
0
ECL levels (–1.00/–1.80 V)
1
+7 dBm levels (+0.50/–0.50 V)
2
LVDS levels (1.43/1.07 V)
3
PECL 3.3 V levels (2.30/1.50 V)
4
PECL 5.0 V levels (4.00/3.20 V)
The query form returns 1 if the current levels do not correspond to one of the
standard levels. This indicates that the VAR LED is on.
